21388985472
21,388,985,472 is an even composite number composed of five prime numbers multiplied together.
21388985472 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 21388985472:
27 × 3 × 17 × 409 × 8011
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 17 × 409 × 8011)See below for interesting mathematical facts about the number 21388985472 from the Numbermatics database.
Names of 21388985472
- Cardinal: 21388985472 can be written as Twenty-one billion, three hundred eighty-eight million, nine hundred eighty-five thousand, four hundred seventy-two.
Scientific notation
- Scientific notation: 2.1388985472 × 1010
Factors of 21388985472
Divisors of 21388985472
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 4 6 8 12 16 17 24 32 34 48 51 64 68 96 102 128 136 192 204 272 384 408 409 544 816 818 1088 1227 1632 1636 2176 2454 3264 3272 4908 6528 6544 6953 8011 9816 13088 13906 16022 19632 20859 24033 26176 27812 32044 39264 41718 48066 52352 55624 64088 78528 83436 96132 111248 128176 136187 157056 166872 192264 222496 256352 272374 333744 384528 408561 444992 512704 544748 667488 769056 817122 889984 1025408 1089496 1334976 1538112 1634244 2178992 2669952 3076224 3268488 3276499 4357984 6536976 6552998 8715968 9829497 13073952 13105996 17431936 19658994 26147904 26211992 39317988 52295808 52423984 55700483 78635976 104847968 111400966 157271952 167101449 209695936 222801932 314543904 334202898 419391872 445603864 629087808 668405796 891207728 1258175616 1336811592 1782415456 2673623184 3564830912 5347246368 7129661824 10694492736 21388985472
- Sum of all divisors σ(n): 60311131200
- Sum of proper divisors (its aliquot sum) s(n): 38922145728
- 21388985472 is an abundant number, because the sum of its proper divisors (38922145728) is greater than itself. Its abundance is 17533160256
Bases of 21388985472
- Binary: 100111110101110001000000100100000002
- Hexadecimal: 0x4FAE20480
- Base-36: 9TQG6TC
Squares and roots of 21388985472
- 21388985472 squared (213889854722) is 457488699521427062784
- 21388985472 cubed (213889854723) is 9785219147667976798594607874048
-
The
square root of 21388985472 is 146249.7366561731 -
The
cube root of 21388985472 is 2775.8546931779
Scales and comparisons
How big is 21388985472?- 21,388,985,472 seconds is equal to 680 years, 5 weeks, 2 days, 16 hours, 51 minutes, 12 seconds.
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To count from 1 to 21,388,985,472 would take you about one thousand, three hundred sixty 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 21388985472 cubic inches would be around 231.3 feet tall.
Recreational maths with 21388985472
- 21388985472 backwards is 27458988312
- The number of decimal digits it has is: 11
- The sum of 21388985472's digits is 57
- More coming soon!
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The information we have on file for 21388985472 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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