21681018612
21,681,018,612 is an even composite number composed of seven prime numbers multiplied together.
21681018612 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of four hundred thirty-two divisors.
Prime factorization of 21681018612:
22 × 32 × 112 × 17 × 37 × 41 × 193
(2 × 2 × 3 × 3 × 11 × 11 × 17 × 37 × 41 × 193)See below for interesting mathematical facts about the number 21681018612 from the Numbermatics database.
Names of 21681018612
- Cardinal: 21681018612 can be written as Twenty-one billion, six hundred eighty-one million, eighteen thousand, six hundred twelve.
Scientific notation
- Scientific notation: 2.1681018612 × 1010
Factors of 21681018612
Divisors of 21681018612
- Number of divisors d(n): 432
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Complete list of divisors:
1 2 3 4 6 9 11 12 17 18 22 33 34 36 37 41 44 51 66 68 74 82 99 102 111 121 123 132 148 153 164 187 193 198 204 222 242 246 306 333 363 369 374 386 396 407 444 451 484 492 561 579 612 629 666 697 726 738 748 772 814 902 1089 1122 1158 1221 1258 1332 1353 1394 1452 1476 1517 1628 1683 1737 1804 1887 2057 2091 2123 2178 2244 2316 2442 2516 2706 2788 3034 3281 3366 3474 3663 3774 4059 4114 4182 4246 4356 4477 4551 4884 4961 5412 5661 6068 6171 6273 6369 6562 6732 6919 6948 7141 7326 7548 7667 7913 8118 8228 8364 8492 8954 9102 9843 9922 11322 12342 12546 12738 13124 13431 13653 13838 14282 14652 14883 15334 15826 16236 16687 17908 18204 18513 19107 19686 19844 20757 21423 22644 23001 23353 23739 24684 25092 25476 25789 26862 27306 27676 28564 29529 29766 30668 31652 33374 36091 37026 38214 39372 40293 41514 42846 44649 46002 46706 47478 50061 51578 53724 54612 59058 59532 62271 64269 66748 69003 70059 71217 72182 74052 76109 76428 77367 78551 80586 83028 84337 85692 87043 89298 92004 93412 94956 100122 103156 108273 118116 121397 124542 128538 134521 138006 140118 142434 144364 150183 152218 154734 157102 161172 168674 174086 178596 183557 200244 210177 216546 228327 232101 235653 242794 249084 253011 257076 261129 269042 276012 280236 283679 284868 292781 300366 304436 309468 314204 324819 337348 348172 364191 367114 397001 403563 420354 433092 456654 464202 471306 485588 506022 522258 538084 550671 567358 585562 600732 649638 684981 706959 728382 734228 759033 783387 794002 807126 840708 851037 864061 878343 913308 928404 942612 957473 1012044 1044516 1092573 1101342 1134716 1171124 1191003 1210689 1299276 1335367 1369962 1413918 1456764 1479731 1518066 1566774 1588004 1614252 1652013 1702074 1728122 1756686 1914946 2185146 2202684 2382006 2421378 2553111 2592183 2635029 2670734 2739924 2827836 2872419 2959462 3036132 3120469 3133548 3220591 3304026 3404148 3456244 3513372 3573009 3829892 4006101 4370292 4439193 4764012 4842756 4977277 5106222 5184366 5270058 5341468 5744838 5918924 6240938 6441182 6608052 7146018 7776549 8012202 8617257 8878386 9361407 9661773 9954554 10212444 10368732 10540116 11489676 12018303 12481876 12882364 13317579 14292036 14689037 14931831 15553098 16024404 16277041 17234514 17756772 18722814 19323546 19909108 24036606 26635158 28084221 28985319 29378074 29863662 31106196 32554082 34469028 35426501 37445628 38647092 44067111 44795493 48073212 48831123 53270316 54750047 56168442 57970638 58756148 59727324 65108164 70853002 88134222 89590986 97662246 106279503 109500094 112336884 115941276 132201333 141706004 146493369 164250141 176268444 179181972 195324492 212559006 219000188 264402666 292986738 318838509 328500282 425118012 492750423 528805332 585973476 602250517 637677018 657000564 985500846 1204501034 1275354036 1806751551 1971001692 2409002068 3613503102 5420254653 7227006204 10840509306 21681018612
- Sum of all divisors σ(n): 67452826896
- Sum of proper divisors (its aliquot sum) s(n): 45771808284
- 21681018612 is an abundant number, because the sum of its proper divisors (45771808284) is greater than itself. Its abundance is 24090789672
Bases of 21681018612
- Binary: 101000011000100101000010110111101002
- Hexadecimal: 0x50C4A16F4
- Base-36: 9YKBH10
Squares and roots of 21681018612
- 21681018612 squared (216810186122) is 470066568053890406544
- 21681018612 cubed (216810186123) is 10191522010855362523288710596928
-
The
square root of 21681018612 is 147244.7575026017 -
The
cube root of 21681018612 is 2788.4309472531
Scales and comparisons
How big is 21681018612?- 21,681,018,612 seconds is equal to 689 years, 20 weeks, 1 day, 17 hours, 10 minutes, 12 seconds.
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To count from 1 to 21,681,018,612 would take you about one thousand, three hundred seventy-eight 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 21681018612 cubic inches would be around 232.4 feet tall.
Recreational maths with 21681018612
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