21940828
21,940,828 is an even composite number composed of five prime numbers multiplied together.
21940828 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 21940828:
22 × 72 × 13 × 79 × 109
(2 × 2 × 7 × 7 × 13 × 79 × 109)See below for interesting mathematical facts about the number 21940828 from the Numbermatics database.
Names of 21940828
- Cardinal: 21940828 can be written as Twenty-one million, nine hundred forty thousand, eight hundred twenty-eight.
Scientific notation
- Scientific notation: 2.1940828 × 107
Factors of 21940828
Divisors of 21940828
- Number of divisors d(n): 72
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Complete list of divisors:
1 2 4 7 13 14 26 28 49 52 79 91 98 109 158 182 196 218 316 364 436 553 637 763 1027 1106 1274 1417 1526 2054 2212 2548 2834 3052 3871 4108 5341 5668 7189 7742 8611 9919 10682 14378 15484 17222 19838 21364 28756 34444 39676 50323 60277 69433 100646 111943 120554 138866 201292 223886 241108 277732 421939 447772 783601 843878 1567202 1687756 3134404 5485207 10970414 21940828
- Sum of all divisors σ(n): 49156800
- Sum of proper divisors (its aliquot sum) s(n): 27215972
- 21940828 is an abundant number, because the sum of its proper divisors (27215972) is greater than itself. Its abundance is 5275144
Bases of 21940828
- Binary: 10100111011001010010111002
- Hexadecimal: 0x14ECA5C
- Base-36: D29NG
Squares and roots of 21940828
- 21940828 squared (219408282) is 481399933325584
- 21940828 cubed (219408283) is 10562313136308106543552
-
The
square root of 21940828 is 4684.1037563229 -
The
cube root of 21940828 is 279.9524919397
Scales and comparisons
How big is 21940828?- 21,940,828 seconds is equal to 36 weeks, 1 day, 22 hours, 40 minutes, 28 seconds.
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To count from 1 to 21,940,828 would take you about two weeks!
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 21940828 cubic inches would be around 23.3 feet tall.
Recreational maths with 21940828
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The information we have on file for 21940828 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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