21387647008
21,387,647,008 is an even composite number composed of five prime numbers multiplied together.
21387647008 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of three hundred thirty-six divisors.
Prime factorization of 21387647008:
25 × 76 × 13 × 19 × 23
(2 × 2 × 2 × 2 × 2 × 7 × 7 × 7 × 7 × 7 × 7 × 13 × 19 × 23)See below for interesting mathematical facts about the number 21387647008 from the Numbermatics database.
Names of 21387647008
- Cardinal: 21387647008 can be written as Twenty-one billion, three hundred eighty-seven million, six hundred forty-seven thousand and eight.
Scientific notation
- Scientific notation: 2.1387647008 × 1010
Factors of 21387647008
Divisors of 21387647008
- Number of divisors d(n): 336
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Complete list of divisors:
1 2 4 7 8 13 14 16 19 23 26 28 32 38 46 49 52 56 76 91 92 98 104 112 133 152 161 182 184 196 208 224 247 266 299 304 322 343 364 368 392 416 437 494 532 598 608 637 644 686 728 736 784 874 931 988 1064 1127 1196 1274 1288 1372 1456 1568 1729 1748 1862 1976 2093 2128 2254 2392 2401 2548 2576 2744 2912 3059 3458 3496 3724 3952 4186 4256 4459 4508 4784 4802 5096 5152 5488 5681 6118 6517 6916 6992 7448 7889 7904 8372 8918 9016 9568 9604 10192 10976 11362 12103 12236 13034 13832 13984 14651 14896 15778 16744 16807 17836 18032 19208 20384 21413 22724 24206 24472 26068 27664 29302 29792 31213 31556 33488 33614 35672 36064 38416 39767 42826 45448 45619 48412 48944 52136 55223 55328 58604 62426 63112 66976 67228 71344 76832 79534 84721 85652 90896 91238 96824 97888 102557 104272 110446 117208 117649 124852 126224 134456 142688 149891 159068 169442 171304 181792 182476 193648 205114 208544 218491 220892 234416 235298 249704 252448 268912 278369 299782 318136 319333 338884 342608 364952 386561 387296 410228 436982 441784 468832 470596 499408 537824 556738 593047 599564 636272 638666 677768 685216 717899 729904 773122 820456 873964 883568 941192 998816 1049237 1113476 1186094 1199128 1272544 1277332 1355536 1435798 1459808 1529437 1546244 1640912 1747928 1767136 1882384 1948583 2098474 2226952 2235331 2372188 2398256 2554664 2705927 2711072 2871596 3058874 3092488 3281824 3495856 3764768 3897166 4151329 4196948 4453904 4470662 4744376 4796512 5025293 5109328 5411854 5743192 6117748 6184976 6991712 7344659 7794332 8302658 8393896 8907808 8941324 9488752 10050586 10218656 10823708 11486384 12235496 12369952 13640081 14689318 15588664 16605316 16787792 17882648 18977504 20101172 21647416 22972768 24470992 27280162 29059303 29378636 31177328 33210632 33575584 35177051 35765296 40202344 43294832 48941984 51412613 54560324 58118606 58757272 62354656 66421264 70354102 71530592 80404688 86589664 95480567 102825226 109120648 116237212 117514544 132842528 140708204 160809376 190961134 205650452 218241296 232474424 235029088 281416408 381922268 411300904 436482592 464948848 562832816 668363969 763844536 822601808 929897696 1125665632 1336727938 1527689072 1645203616 2673455876 3055378144 5346911752 10693823504 21387647008
- Sum of all divisors σ(n): 58109123520
- Sum of proper divisors (its aliquot sum) s(n): 36721476512
- 21387647008 is an abundant number, because the sum of its proper divisors (36721476512) is greater than itself. Its abundance is 15333829504
Bases of 21387647008
- Binary: 100111110101100110110011000001000002
- Hexadecimal: 0x4FACD9820
- Base-36: 9TPNI1S
Squares and roots of 21387647008
- 21387647008 squared (213876470082) is 457431444538811352064
- 21387647008 cubed (213876470083) is 9783382266155626553848044224512
-
The
square root of 21387647008 is 146245.1606310445 -
The
cube root of 21387647008 is 2775.7967901811
Scales and comparisons
How big is 21387647008?- 21,387,647,008 seconds is equal to 680 years, 3 weeks, 1 day, 5 hours, 3 minutes, 28 seconds.
-
To count from 1 to 21,387,647,008 would take you about one thousand, three hundred sixty 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 21387647008 cubic inches would be around 231.3 feet tall.
Recreational maths with 21387647008
- 21387647008 backwards is 80074678312
- 21387647008 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21387647008's digits is 46
- More coming soon!
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