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In mathematics. 24 is an even composite number, a highly composite number, an abundant number, a practical number, a congruent congruent number. An icositetragon is a regular polygon with 24 sides. The tesseract has 24 two-dimensional faces (which are all squares). 24 is the kissing number in 4-dimensional space.
October 24 is the 297th day of the year (298th in leap years) in the Gregorian calendar; 68 days remain until the end of the year. Events. Pre-1600. AD 69 ...
34 is the sum of the first two perfect numbers 6 + 28, [ 3 ] whose difference is its composite index (22). [ 4 ] Its reduced totient and Euler totient values are both 16 (or 4 2 = 2 4). [ 5 ][ 6 ] The sum of all its divisors aside from one equals 53, which is the sixteenth prime number. There is no solution to the equation φ (x) = 34, making ...
Ace trivia night with these cool and random fun facts for adults and kids. This list of interesting facts is the perfect way to learn something new about life. 105 Fun Facts About Science, History ...
25 is the sum of the five consecutive single-digit odd natural numbers 1, 3, 5, 7, and 9. 25 is a centered octagonal number, [1] a centered square number, [2] a centered octahedral number, [3] and an automorphic number. [4] 25 percent (%) is equal to 1 4 . It is the smallest decimal Friedman number as it can be expressed by its own ...
Twenty is a pronic number, as it is the product of consecutive integers, namely 4 and 5. [3] It is also the second pronic sum number (or pronic pyramid) after 2, being the sum of the first three pronic numbers: 2 + 6 + 12. It is the third composite number to be the product of a squared prime and a prime (and also the second member of the 22 × ...
72 is the first number that can be expressed as the difference of the squares of primes in just two distinct ways: 112 − 72 = 192 − 172. [12] 72 is the sum between 60 and 12, the former being the second unitary perfect number before 6 (and the latter the smallest of only two sublime numbers).
The 24 puzzle is an arithmetical puzzle in which the objective is to find a way to manipulate four integers so that the end result is 24. For example, for the numbers 4, 7, 8, 8, a possible solution is . The problem has been played as a card game in Shanghai since the 1960s, [1] using playing cards. It has been known by other names, including ...