21420690984
21,420,690,984 is an even composite number composed of six prime numbers multiplied together.
21420690984 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred eighty-eight divisors.
Prime factorization of 21420690984:
23 × 32 × 7 × 112 × 197 × 1783
(2 × 2 × 2 × 3 × 3 × 7 × 11 × 11 × 197 × 1783)See below for interesting mathematical facts about the number 21420690984 from the Numbermatics database.
Names of 21420690984
- Cardinal: 21420690984 can be written as Twenty-one billion, four hundred twenty million, six hundred ninety thousand, nine hundred eighty-four.
Scientific notation
- Scientific notation: 2.1420690984 × 1010
Factors of 21420690984
Divisors of 21420690984
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 3 4 6 7 8 9 11 12 14 18 21 22 24 28 33 36 42 44 56 63 66 72 77 84 88 99 121 126 132 154 168 197 198 231 242 252 264 308 363 394 396 462 484 504 591 616 693 726 788 792 847 924 968 1089 1182 1379 1386 1452 1576 1694 1773 1783 1848 2167 2178 2364 2541 2758 2772 2904 3388 3546 3566 4137 4334 4356 4728 5082 5349 5516 5544 6501 6776 7092 7132 7623 8274 8668 8712 10164 10698 11032 12411 12481 13002 14184 14264 15169 15246 16047 16548 17336 19503 19613 20328 21396 23837 24822 24962 26004 30338 30492 32094 33096 37443 39006 39226 42792 45507 47674 49644 49924 52008 58839 60676 60984 64188 71511 74886 78012 78452 91014 95348 99288 99848 112329 117678 121352 128376 136521 137291 143022 149772 156024 156904 166859 176517 182028 190696 214533 215743 224658 235356 273042 274582 286044 299544 333718 351251 353034 364056 411873 429066 431486 449316 470712 500577 546084 549164 572088 647229 667436 702502 706068 823746 858132 862972 898632 1001154 1053753 1092168 1098328 1235619 1294458 1334872 1405004 1412136 1501731 1510201 1647492 1716264 1725944 1941687 2002308 2107506 2458757 2471238 2588916 2810008 3003462 3020402 3161259 3294984 3863761 3883374 4004616 4215012 4530603 4917514 4942476 5177832 6006924 6040804 6322518 7376271 7727522 7766748 8430024 9061206 9835028 9884952 11591283 12013848 12081608 12645036 13591809 14752542 15455044 15533496 18122412 19670056 22128813 23182566 25290072 27046327 27183618 29505084 30910088 34773849 36244824 42501371 44257626 46365132 54092654 54367236 59010168 69547698 81138981 85002742 88515252 92730264 108185308 108734472 127504113 139095396 162277962 170005484 177030504 216370616 243416943 255008226 278190792 297509597 324555924 340010968 382512339 486833886 510016452 595019194 649111848 765024678 892528791 973667772 1020032904 1190038388 1530049356 1785057582 1947335544 2380076776 2677586373 3060098712 3570115164 5355172746 7140230328 10710345492 21420690984
- Sum of all divisors σ(n): 73288575360
- Sum of proper divisors (its aliquot sum) s(n): 51867884376
- 21420690984 is an abundant number, because the sum of its proper divisors (51867884376) is greater than itself. Its abundance is 30447193392
Bases of 21420690984
- Binary: 100111111001100010111001110001010002
- Hexadecimal: 0x4FCC5CE28
- Base-36: 9U9BQY0
Squares and roots of 21420690984
- 21420690984 squared (214206909842) is 458846002232018888256
- 21420690984 cubed (214206909843) is 9828798423055850875783002683904
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The
square root of 21420690984 is 146358.0916246179 -
The
cube root of 21420690984 is 2777.2255926009
Scales and comparisons
How big is 21420690984?- 21,420,690,984 seconds is equal to 681 years, 5 weeks, 5 days, 15 hours, 56 minutes, 24 seconds.
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To count from 1 to 21,420,690,984 would take you about one thousand, three hundred sixty-two 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 21420690984 cubic inches would be around 231.4 feet tall.
Recreational maths with 21420690984
- 21420690984 backwards is 48909602412
- The number of decimal digits it has is: 11
- The sum of 21420690984's digits is 45
- More coming soon!
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