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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.
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 ...
Twelve is the largest number with a single-syllable name in English.Early Germanic numbers have been theorized to have been non-decimal: evidence includes the unusual phrasing of eleven and twelve, the former use of "hundred" to refer to groups of 120, and the presence of glosses such as "tentywise" or "ten-count" in medieval texts showing that writers could not presume their readers would ...
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 ...
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).
13 (thirteen) is the natural number following 12 and preceding 14.. Folklore surrounding the number 13 appears in many cultures around the world: one theory is that this is due to the cultures employing lunar-solar calendars (there are approximately 12.41 lunations per solar year, and hence 12 "true months" plus a smaller, and often portentous, thirteenth month).
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 ...
The NORAD Santa Tracker began with a wrong number call. Every Christmas Eve, the North American Aerospace Defense Command (NORAD) adjusts its satellites to track Santa on his journey around the world.