21387657984
21,387,657,984 is an even composite number composed of five prime numbers multiplied together.
21387657984 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of five hundred seventy-six divisors.
Prime factorization of 21387657984:
28 × 3 × 73 × 113 × 61
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 7 × 7 × 7 × 11 × 11 × 11 × 61)See below for interesting mathematical facts about the number 21387657984 from the Numbermatics database.
Names of 21387657984
- Cardinal: 21387657984 can be written as Twenty-one billion, three hundred eighty-seven million, six hundred fifty-seven thousand, nine hundred eighty-four.
Scientific notation
- Scientific notation: 2.1387657984 × 1010
Factors of 21387657984
Divisors of 21387657984
- Number of divisors d(n): 576
-
Complete list of divisors:
1 2 3 4 6 7 8 11 12 14 16 21 22 24 28 32 33 42 44 48 49 56 61 64 66 77 84 88 96 98 112 121 122 128 132 147 154 168 176 183 192 196 224 231 242 244 256 264 294 308 336 343 352 363 366 384 392 427 448 462 484 488 528 539 588 616 671 672 686 704 726 732 768 784 847 854 896 924 968 976 1029 1056 1078 1176 1232 1281 1331 1342 1344 1372 1408 1452 1464 1568 1617 1694 1708 1792 1848 1936 1952 2013 2058 2112 2156 2352 2464 2541 2562 2662 2684 2688 2744 2816 2904 2928 2989 3136 3234 3388 3416 3696 3773 3872 3904 3993 4026 4116 4224 4312 4697 4704 4928 5082 5124 5324 5368 5376 5488 5808 5856 5929 5978 6272 6468 6776 6832 7381 7392 7546 7744 7808 7986 8052 8232 8448 8624 8967 9317 9394 9408 9856 10164 10248 10648 10736 10976 11319 11616 11712 11858 11956 12544 12936 13552 13664 14091 14762 14784 15092 15488 15616 15972 16104 16464 17248 17787 17934 18634 18788 18816 19712 20328 20496 20923 21296 21472 21952 22143 22638 23232 23424 23716 23912 25872 27104 27328 27951 28182 29524 29568 30184 30976 31944 32208 32879 32928 34496 35574 35868 37268 37576 37632 40656 40992 41503 41846 42592 42944 43904 44286 45276 46464 46848 47432 47824 51667 51744 54208 54656 55902 56364 59048 59136 60368 62769 63888 64416 65219 65758 65856 68992 71148 71736 74536 75152 81191 81312 81984 83006 83692 85184 85888 87808 88572 90552 92928 94864 95648 98637 103334 103488 108416 109312 111804 112728 118096 120736 124509 125538 127776 128832 130438 131516 131712 137984 142296 143472 149072 150304 155001 162382 162624 163968 166012 167384 170368 171776 177144 181104 189728 191296 195657 197274 206668 206976 216832 223608 225456 230153 236192 241472 243573 249018 251076 255552 257664 260876 263032 263424 284592 286944 298144 300608 310002 324764 325248 327936 332024 334768 340736 354288 361669 362208 379456 382592 391314 394548 413336 413952 447216 450912 456533 460306 472384 482944 487146 498036 502152 511104 515328 521752 526064 568337 569184 573888 596288 601216 620004 649528 650496 664048 669536 690459 708576 723338 724416 758912 765184 782628 789096 826672 894432 901824 913066 920612 944768 965888 974292 996072 1004304 1022208 1043504 1052128 1085007 1136674 1138368 1147776 1192576 1202432 1240008 1299056 1328096 1339072 1369599 1380918 1417152 1446676 1448832 1517824 1565256 1578192 1653344 1705011 1788864 1803648 1826132 1841224 1889536 1948584 1992144 2008608 2087008 2104256 2170014 2273348 2276736 2295552 2385152 2480016 2531683 2598112 2656192 2678144 2739198 2761836 2834304 2893352 2897664 3130512 3156384 3306688 3410022 3577728 3607296 3652264 3682448 3897168 3978359 3984288 4017216 4174016 4208512 4340028 4546696 4553472 4960032 5063366 5196224 5312384 5356288 5478396 5523672 5668608 5786704 6261024 6312768 6613376 6820044 7155456 7304528 7364896 7595049 7794336 7956718 7968576 8034432 8348032 8417024 8680056 9093392 9920064 10126732 10392448 10624768 10956792 11047344 11573408 11935077 12522048 12625536 13226752 13640088 14609056 14729792 15190098 15588672 15913436 15937152 16068864 16696064 17360112 18186784 19840128 20253464 20784896 21913584 22094688 23146816 23870154 25044096 25251072 27280176 27848513 29218112 29459584 30380196 31177344 31826872 31874304 34720224 36373568 39680256 40506928 43827168 44189376 46293632 47740308 50088192 54560352 55697026 58436224 58919168 60760392 62354688 63653744 69440448 72747136 81013856 83545539 87654336 88378752 92587264 95480616 109120704 111394052 116872448 121520784 127307488 138880896 145494272 162027712 167091078 175308672 176757504 190961232 218241408 222788104 243041568 254614976 277761792 324055424 334182156 350617344 381922464 436482816 445576208 486083136 509229952 648110848 668364312 763844928 891152416 972166272 1018459904 1336728624 1527689856 1782304832 1944332544 2673457248 3055379712 3564609664 5346914496 7129219328 10693828992 21387657984
- Sum of all divisors σ(n): 74211916800
- Sum of proper divisors (its aliquot sum) s(n): 52824258816
- 21387657984 is an abundant number, because the sum of its proper divisors (52824258816) is greater than itself. Its abundance is 31436600832
Bases of 21387657984
- Binary: 100111110101100110111000011000000002
- Hexadecimal: 0x4FACDC300
- Base-36: 9TPNQIO
Squares and roots of 21387657984
- 21387657984 squared (213876579842) is 457431914040558944256
- 21387657984 cubed (213876579843) is 9783397328465962203939449339904
-
The
square root of 21387657984 is 146245.1981570677 -
The
cube root of 21387657984 is 2775.7972650213
Scales and comparisons
How big is 21387657984?- 21,387,657,984 seconds is equal to 680 years, 3 weeks, 1 day, 8 hours, 6 minutes, 24 seconds.
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To count from 1 to 21,387,657,984 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 21387657984 cubic inches would be around 231.3 feet tall.
Recreational maths with 21387657984
- 21387657984 backwards is 48975678312
- The number of decimal digits it has is: 11
- The sum of 21387657984's digits is 60
- More coming soon!
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