21130872
21,130,872 is an even composite number composed of five prime numbers multiplied together.
21130872 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 21130872:
23 × 3 × 7 × 73 × 1723
(2 × 2 × 2 × 3 × 7 × 73 × 1723)See below for interesting mathematical facts about the number 21130872 from the Numbermatics database.
Names of 21130872
- Cardinal: 21130872 can be written as Twenty-one million, one hundred thirty thousand, eight hundred seventy-two.
Scientific notation
- Scientific notation: 2.1130872 × 107
Factors of 21130872
Divisors of 21130872
- Number of divisors d(n): 64
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Complete list of divisors:
1 2 3 4 6 7 8 12 14 21 24 28 42 56 73 84 146 168 219 292 438 511 584 876 1022 1533 1723 1752 2044 3066 3446 4088 5169 6132 6892 10338 12061 12264 13784 20676 24122 36183 41352 48244 72366 96488 125779 144732 251558 289464 377337 503116 754674 880453 1006232 1509348 1760906 2641359 3018696 3521812 5282718 7043624 10565436 21130872
- Sum of all divisors σ(n): 61236480
- Sum of proper divisors (its aliquot sum) s(n): 40105608
- 21130872 is an abundant number, because the sum of its proper divisors (40105608) is greater than itself. Its abundance is 18974736
Bases of 21130872
- Binary: 10100001001101110011110002
- Hexadecimal: 0x1426E78
- Base-36: CKWOO
Squares and roots of 21130872
- 21130872 squared (211308722) is 446513751480384
- 21130872 cubed (211308723) is 9435224928771804814848
-
The
square root of 21130872 is 4596.8328227161 -
The
cube root of 21130872 is 276.4643516963
Scales and comparisons
How big is 21130872?- 21,130,872 seconds is equal to 34 weeks, 6 days, 13 hours, 41 minutes, 12 seconds.
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To count from 1 to 21,130,872 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 21130872 cubic inches would be around 23 feet tall.
Recreational maths with 21130872
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The information we have on file for 21130872 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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