21006972
21,006,972 is an even composite number composed of five prime numbers multiplied together.
21006972 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 21006972:
22 × 33 × 7 × 37 × 751
(2 × 2 × 3 × 3 × 3 × 7 × 37 × 751)See below for interesting mathematical facts about the number 21006972 from the Numbermatics database.
Names of 21006972
- Cardinal: 21006972 can be written as Twenty-one million, six thousand, nine hundred seventy-two.
Scientific notation
- Scientific notation: 2.1006972 × 107
Factors of 21006972
Divisors of 21006972
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 3 4 6 7 9 12 14 18 21 27 28 36 37 42 54 63 74 84 108 111 126 148 189 222 252 259 333 378 444 518 666 751 756 777 999 1036 1332 1502 1554 1998 2253 2331 3004 3108 3996 4506 4662 5257 6759 6993 9012 9324 10514 13518 13986 15771 20277 21028 27036 27787 27972 31542 40554 47313 55574 63084 81108 83361 94626 111148 141939 166722 189252 194509 250083 283878 333444 389018 500166 567756 583527 750249 778036 1000332 1167054 1500498 1750581 2334108 3000996 3501162 5251743 7002324 10503486 21006972
- Sum of all divisors σ(n): 64010240
- Sum of proper divisors (its aliquot sum) s(n): 43003268
- 21006972 is an abundant number, because the sum of its proper divisors (43003268) is greater than itself. Its abundance is 21996296
Bases of 21006972
- Binary: 10100000010001010011111002
- Hexadecimal: 0x1408A7C
- Base-36: CI930
Squares and roots of 21006972
- 21006972 squared (210069722) is 441292872608784
- 21006972 cubed (210069723) is 9270227018692292442048
-
The
square root of 21006972 is 4583.3363393929 -
The
cube root of 21006972 is 275.9229463541
Scales and comparisons
How big is 21006972?- 21,006,972 seconds is equal to 34 weeks, 5 days, 3 hours, 16 minutes, 12 seconds.
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To count from 1 to 21,006,972 would take you about sixteen hours!
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 21006972 cubic inches would be around 23 feet tall.
Recreational maths with 21006972
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The information we have on file for 21006972 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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