21820968
21,820,968 is an even composite number composed of five prime numbers multiplied together.
21820968 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 21820968:
23 × 33 × 13 × 19 × 409
(2 × 2 × 2 × 3 × 3 × 3 × 13 × 19 × 409)See below for interesting mathematical facts about the number 21820968 from the Numbermatics database.
Names of 21820968
- Cardinal: 21820968 can be written as Twenty-one million, eight hundred twenty thousand, nine hundred sixty-eight.
Scientific notation
- Scientific notation: 2.1820968 × 107
Factors of 21820968
Divisors of 21820968
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 4 6 8 9 12 13 18 19 24 26 27 36 38 39 52 54 57 72 76 78 104 108 114 117 152 156 171 216 228 234 247 312 342 351 409 456 468 494 513 684 702 741 818 936 988 1026 1227 1368 1404 1482 1636 1976 2052 2223 2454 2808 2964 3272 3681 4104 4446 4908 5317 5928 6669 7362 7771 8892 9816 10634 11043 13338 14724 15542 15951 17784 21268 22086 23313 26676 29448 31084 31902 42536 44172 46626 47853 53352 62168 63804 69939 88344 93252 95706 101023 127608 139878 143559 186504 191412 202046 209817 279756 287118 303069 382824 404092 419634 559512 574236 606138 808184 839268 909207 1148472 1212276 1678536 1818414 2424552 2727621 3636828 5455242 7273656 10910484 21820968
- Sum of all divisors σ(n): 68880000
- Sum of proper divisors (its aliquot sum) s(n): 47059032
- 21820968 is an abundant number, because the sum of its proper divisors (47059032) is greater than itself. Its abundance is 25238064
Bases of 21820968
- Binary: 10100110011110110001010002
- Hexadecimal: 0x14CF628
- Base-36: CZP60
Squares and roots of 21820968
- 21820968 squared (218209682) is 476154644457024
- 21820968 cubed (218209683) is 10390155259748098079232
-
The
square root of 21820968 is 4671.2918983937 -
The
cube root of 21820968 is 279.4417790007
Scales and comparisons
How big is 21820968?- 21,820,968 seconds is equal to 36 weeks, 13 hours, 22 minutes, 48 seconds.
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To count from 1 to 21,820,968 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 21820968 cubic inches would be around 23.3 feet tall.
Recreational maths with 21820968
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The information we have on file for 21820968 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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