21721704984
21,721,704,984 is an even composite number composed of six prime numbers multiplied together.
21721704984 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred fifty-six divisors.
Prime factorization of 21721704984:
23 × 33 × 7 × 17 × 67 × 12613
(2 × 2 × 2 × 3 × 3 × 3 × 7 × 17 × 67 × 12613)See below for interesting mathematical facts about the number 21721704984 from the Numbermatics database.
Names of 21721704984
- Cardinal: 21721704984 can be written as Twenty-one billion, seven hundred twenty-one million, seven hundred four thousand, nine hundred eighty-four.
Scientific notation
- Scientific notation: 2.1721704984 × 1010
Factors of 21721704984
Divisors of 21721704984
- Number of divisors d(n): 256
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Complete list of divisors:
1 2 3 4 6 7 8 9 12 14 17 18 21 24 27 28 34 36 42 51 54 56 63 67 68 72 84 102 108 119 126 134 136 153 168 189 201 204 216 238 252 268 306 357 378 402 408 459 469 476 504 536 603 612 714 756 804 918 938 952 1071 1139 1206 1224 1407 1428 1512 1608 1809 1836 1876 2142 2278 2412 2814 2856 3213 3417 3618 3672 3752 4221 4284 4556 4824 5628 6426 6834 7236 7973 8442 8568 9112 10251 11256 12613 12663 12852 13668 14472 15946 16884 20502 23919 25226 25326 25704 27336 30753 31892 33768 37839 41004 47838 50452 50652 61506 63784 71757 75678 82008 88291 95676 100904 101304 113517 123012 143514 151356 176582 191352 214421 215271 227034 246024 264873 287028 302712 340551 353164 428842 430542 454068 529746 574056 643263 681102 706328 794619 845071 857684 861084 908136 1059492 1286526 1362204 1500947 1589238 1690142 1715368 1722168 1929789 2118984 2383857 2535213 2573052 2724408 3001894 3178476 3380284 3859578 4502841 4767714 5070426 5146104 5789367 5915497 6003788 6356952 6760568 7605639 7719156 9005682 9535428 10140852 11578734 11830994 12007576 13508523 14366207 15211278 15438312 17746491 18011364 19070856 20281704 22816917 23157468 23661988 27017046 28732414 30422556 35492982 36022728 40525569 43098621 45633834 46314936 47323976 53239473 54034092 57464828 60845112 70985964 81051138 86197242 91267668 100563449 106478946 108068184 114929656 129295863 141971928 159718419 162102276 172394484 182535336 201126898 212957892 258591726 301690347 319436838 324204552 344788968 387887589 402253796 425915784 517183452 603380694 638873676 775775178 804507592 905071041 1034366904 1206761388 1277747352 1551550356 1810142082 2413522776 2715213123 3103100712 3620284164 5430426246 7240568328 10860852492 21721704984
- Sum of all divisors σ(n): 74109772800
- Sum of proper divisors (its aliquot sum) s(n): 52388067816
- 21721704984 is an abundant number, because the sum of its proper divisors (52388067816) is greater than itself. Its abundance is 30666362832
Bases of 21721704984
- Binary: 101000011101011011011101010000110002
- Hexadecimal: 0x50EB6EA18
- Base-36: 9Z8JIU0
Squares and roots of 21721704984
- 21721704984 squared (217217049842) is 471832467411930440256
- 21721704984 cubed (217217049843) is 10249005658994747025170069435904
-
The
square root of 21721704984 is 147382.8517297721 -
The
cube root of 21721704984 is 2790.1741040617
Scales and comparisons
How big is 21721704984?- 21,721,704,984 seconds is equal to 690 years, 35 weeks, 3 days, 14 hours, 56 minutes, 24 seconds.
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To count from 1 to 21,721,704,984 would take you about one thousand, three hundred eighty-one years!
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 21721704984 cubic inches would be around 232.5 feet tall.
Recreational maths with 21721704984
- 21721704984 backwards is 48940712712
- The number of decimal digits it has is: 11
- The sum of 21721704984's digits is 45
- More coming soon!
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