A number is called beautiful if, for every digit x in the number, there are x occurrences of it in the number. Example: 1 is beautiful because 1 has 1 occurrence. 3133 is beautiful because 1 has 1 occurrence and 3 has 3 occurrences.
The number 1.618… goes by many different names. However, mathematicians mostly call it phi. Everywhere around us, we see this beautiful number.
Therefore, he considers a number pretty if its last digit is 2, 3 or 9.
A perfect number is a positive integer that is equal to the sum of all its proper divisors. The first perfect number is 6 in that 6 = 1+2+3, where 1, 2, and 3 are all of the proper divisors of 6. The next perfect number is 28 = 1 + 2 + 4 + 7 + 14. This is followed by the perfect numbers 496 and 8128.
This number is renowned for the following rule: Take any four-digit number, using at least two different digits (leading zeros are allowed). Arrange the digits in descending and then in ascending order to get two four-digit numbers, adding leading zeros if necessary. Subtract the smaller number from the bigger number.
It is a square number (33 squared), a nonagonal number, a 32-gonal number, a 364-gonal number, and a centered octagonal number. 1089 is the first reverse-divisible number. The next is 2178 (= 1089 × 2 = 8712/4), and they are the only four-digit numbers that divide their reverse.
1729, the Hardy-Ramanujan Number, is the smallest number which can be expressed as the sum of two different cubes in two different ways. 1729 is the sum of the cubes of 10 and 9 - cube of 10 is 1000 and cube of 9 is 729; adding the two numbers results in 1729.
It's the smallest number expressible as the sum of two cubes in two different ways." 1729 is the sum of the cubes of 10 and 9. Cube of 10 is 1000 and the cube of 9 is 729. Both the cubes, therefore, add up to 1729.
Classical antiquity. The Pythagoreans invested particular numbers with unique spiritual properties. The number seven was considered to be particularly interesting because it consisted of the union of the physical (number 4) with the spiritual (number 3). In Pythagorean numerology the number 7 means spirituality.
The top 10 are: 11, 7, 17, 27,19, 23, 12,13, 9 and 18. So how do you pick lucky numbers? For those who use birthdays, five of the most commonly drawn numbers are more than 31, meaning they are not likely to have picked them. Another approach that is commonly used is to look for numbers that have not come up in a while.
Over 30,000 people voted online for their favorite number, and the number chosen by the most people is… drum roll… 7! Almost half of all people chose numbers between 1 and 10.
The first few weird numbers are 70, 836, 4030, 5830, 7192, 7912, 9272, 10430, ... (OEIS A006037). An infinite number of weird numbers are known to exist, and the sequence of weird numbers has positive Schnirelmann density.
2520 is: the smallest number divisible by all integers from 1 to 10, i.e., it is their least common multiple. half of 7! (5040), meaning 7 factorial, or 1×2×3×4×5×6×7.
A number is "sneaky" if you finally reach ZERO. Example 1: Is 95 sneaky? 95 _+92 - 52 = 81 - 25 = 56, 56 -+ 62 - 52 = 11, 11 -+ 12 - 12 = 0.
Zero is a unique number. there are only two numbers that remain the same when you square them, 0 and 1.
"Almost from prehistoric times, the number four was employed to signify what was solid, what could be touched and felt. Its relationship to the cross (four points) made it an outstanding symbol of wholeness and universality, a symbol which drew all to itself".
The most powerful number of all, 22 is often found in the charts of people who are doers, leaders, and visionary builders. These are individuals who are capable of turning wild dreams into solid accomplishments – blessed with the intuition of the number 11 but possessing a more disciplined approach to action.
One of the most important numbers in our universe is the number Pi or π. Explore humankind's odyssey—attempts throughout the ages that truly transcend cultures—to compute, approximate, and understand this enigmatic number.
As the final numeral, the number nine holds special rank. It is associated with forgiveness, compassion and success on the positive side as well as arrogance and self-righteousness on the negative, according to numerologists.
number symbolism
The number 12 is strongly associated with the heavens—the 12 months, the 12 signs of the zodiac, and the 12 stations of the Moon and of the Sun. The ancients recognized 12 main northern stars and 12 main southern stars.
The number seven is usually the overwhelming favorite. Why is that? In many cultures around the world, seven is considered a lucky number. This probably explains the affinity many people feel for the number seven.
A number is perfect if all of its factors, including 1 but excluding itself, perfectly add up to the number you began with. 6, for example, is perfect, because its factors — 3, 2, and 1 — all sum up to 6. 28 is perfect too: 14, 7, 4, 2, and 1 add up to 28.
Discovered by mathemagician Srinivas Ramanujan, 1729 is said to be the magic number because it is the sole number which can be expressed as the sum of the cubes of two different sets of numbers.
1729 is the natural number following 1728 and preceding 1730. It is a taxicab number, and is variously known as Ramanujan's number and the Ramanujan-Hardy number, after an anecdote of the British mathematician G. H. Hardy when he visited Indian mathematician Srinivasa Ramanujan in hospital.