21086856
21,086,856 is an even composite number composed of five prime numbers multiplied together.
21086856 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 21086856:
23 × 32 × 72 × 43 × 139
(2 × 2 × 2 × 3 × 3 × 7 × 7 × 43 × 139)See below for interesting mathematical facts about the number 21086856 from the Numbermatics database.
Names of 21086856
- Cardinal: 21086856 can be written as Twenty-one million, eighty-six thousand, eight hundred fifty-six.
Scientific notation
- Scientific notation: 2.1086856 × 107
Factors of 21086856
Divisors of 21086856
- Number of divisors d(n): 144
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Complete list of divisors:
1 2 3 4 6 7 8 9 12 14 18 21 24 28 36 42 43 49 56 63 72 84 86 98 126 129 139 147 168 172 196 252 258 278 294 301 344 387 392 417 441 504 516 556 588 602 774 834 882 903 973 1032 1112 1176 1204 1251 1548 1668 1764 1806 1946 2107 2408 2502 2709 2919 3096 3336 3528 3612 3892 4214 5004 5418 5838 5977 6321 6811 7224 7784 8428 8757 10008 10836 11676 11954 12642 13622 16856 17514 17931 18963 20433 21672 23352 23908 25284 27244 35028 35862 37926 40866 41839 47816 50568 53793 54488 61299 70056 71724 75852 81732 83678 107586 122598 125517 143448 151704 163464 167356 215172 245196 251034 292873 334712 376551 430344 490392 502068 585746 753102 878619 1004136 1171492 1506204 1757238 2342984 2635857 3012408 3514476 5271714 7028952 10543428 21086856
- Sum of all divisors σ(n): 68468400
- Sum of proper divisors (its aliquot sum) s(n): 47381544
- 21086856 is an abundant number, because the sum of its proper divisors (47381544) is greater than itself. Its abundance is 26294688
Bases of 21086856
- Binary: 10100000111000010100010002
- Hexadecimal: 0x141C288
- Base-36: CJYQ0
Squares and roots of 21086856
- 21086856 squared (210868562) is 444655495964736
- 21086856 cubed (210868563) is 9376386413016969110016
-
The
square root of 21086856 is 4592.0426827285 -
The
cube root of 21086856 is 276.2722581247
Scales and comparisons
How big is 21086856?- 21,086,856 seconds is equal to 34 weeks, 6 days, 1 hour, 27 minutes, 36 seconds.
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To count from 1 to 21,086,856 would take you about two days!
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 21086856 cubic inches would be around 23 feet tall.
Recreational maths with 21086856
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The information we have on file for 21086856 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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