21131376864
21,131,376,864 is an even composite number composed of four prime numbers multiplied together.
21131376864 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of forty-eight divisors.
Prime factorization of 21131376864:
25 × 3 × 13 × 16932193
(2 × 2 × 2 × 2 × 2 × 3 × 13 × 16932193)See below for interesting mathematical facts about the number 21131376864 from the Numbermatics database.
Names of 21131376864
- Cardinal: 21131376864 can be written as Twenty-one billion, one hundred thirty-one million, three hundred seventy-six thousand, eight hundred sixty-four.
Scientific notation
- Scientific notation: 2.1131376864 × 1010
Factors of 21131376864
Divisors of 21131376864
- Number of divisors d(n): 48
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Complete list of divisors:
1 2 3 4 6 8 12 13 16 24 26 32 39 48 52 78 96 104 156 208 312 416 624 1248 16932193 33864386 50796579 67728772 101593158 135457544 203186316 220118509 270915088 406372632 440237018 541830176 660355527 812745264 880474036 1320711054 1625490528 1760948072 2641422108 3521896144 5282844216 7043792288 10565688432 21131376864
- Sum of all divisors σ(n): 59736780432
- Sum of proper divisors (its aliquot sum) s(n): 38605403568
- 21131376864 is an abundant number, because the sum of its proper divisors (38605403568) is greater than itself. Its abundance is 17474026704
Bases of 21131376864
- Binary: 100111010111000011100111000111000002
- Hexadecimal: 0x4EB8738E0
- Base-36: 9PH2QQO
Squares and roots of 21131376864
- 21131376864 squared (211313768642) is 446535088168394474496
- 21131376864 cubed (211313768643) is 9435901231085811134390212460544
-
The
square root of 21131376864 is 145366.3539612933 -
The
cube root of 21131376864 is 2764.6655346355
Scales and comparisons
How big is 21131376864?- 21,131,376,864 seconds is equal to 671 years, 47 weeks, 3 days, 2 hours, 54 minutes, 24 seconds.
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To count from 1 to 21,131,376,864 would take you about one thousand, three hundred forty-three years!
This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
- A cube with a volume of 21131376864 cubic inches would be around 230.4 feet tall.
Recreational maths with 21131376864
- 21131376864 backwards is 46867313112
- The number of decimal digits it has is: 11
- The sum of 21131376864's digits is 42
- More coming soon!
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