21001968
21,001,968 is an even composite number composed of four prime numbers multiplied together.
21001968 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of ninety divisors.
Prime factorization of 21001968:
24 × 32 × 132 × 863
(2 × 2 × 2 × 2 × 3 × 3 × 13 × 13 × 863)See below for interesting mathematical facts about the number 21001968 from the Numbermatics database.
Names of 21001968
- Cardinal: 21001968 can be written as Twenty-one million, one thousand, nine hundred sixty-eight.
Scientific notation
- Scientific notation: 2.1001968 × 107
Factors of 21001968
Divisors of 21001968
- Number of divisors d(n): 90
-
Complete list of divisors:
1 2 3 4 6 8 9 12 13 16 18 24 26 36 39 48 52 72 78 104 117 144 156 169 208 234 312 338 468 507 624 676 863 936 1014 1352 1521 1726 1872 2028 2589 2704 3042 3452 4056 5178 6084 6904 7767 8112 10356 11219 12168 13808 15534 20712 22438 24336 31068 33657 41424 44876 62136 67314 89752 100971 124272 134628 145847 179504 201942 269256 291694 403884 437541 538512 583388 807768 875082 1166776 1312623 1615536 1750164 2333552 2625246 3500328 5250492 7000656 10500984 21001968
- Sum of all divisors σ(n): 63719136
- Sum of proper divisors (its aliquot sum) s(n): 42717168
- 21001968 is an abundant number, because the sum of its proper divisors (42717168) is greater than itself. Its abundance is 21715200
Bases of 21001968
- Binary: 10100000001110110111100002
- Hexadecimal: 0x14076F0
- Base-36: CI580
Squares and roots of 21001968
- 21001968 squared (210019682) is 441082659873024
- 21001968 cubed (210019683) is 9263603908008134111232
-
The
square root of 21001968 is 4582.7904163293 -
The
cube root of 21001968 is 275.9010357227
Scales and comparisons
How big is 21001968?- 21,001,968 seconds is equal to 34 weeks, 5 days, 1 hour, 52 minutes, 48 seconds.
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To count from 1 to 21,001,968 would take you about fourteen 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 21001968 cubic inches would be around 23 feet tall.
Recreational maths with 21001968
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The information we have on file for 21001968 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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