21400915968

Names of 21400915968

• Cardinal: 21400915968 can be written as Twenty-one billion, four hundred million, nine hundred fifteen thousand, nine hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1400915968 × 10¹⁰

Factors of 21400915968

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 404

Divisors of 21400915968

• Number of divisors d(n): 312
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 31 32 36 48 61 62 64 72 93 96 122 124 128 144 183 186 192 244 248 256 279 288 307 366 372 384 488 496 512 549 558 576 614 732 744 768 921 976 992 1024 1098 1116 1152 1228 1464 1488 1536 1842 1891 1952 1984 2048 2196 2232 2304 2456 2763 2928 2976 3072 3684 3782 3904 3968 4096 4392 4464 4608 4912 5526 5673 5856 5952 6144 7368 7564 7808 7936 8784 8928 9216 9517 9824 11052 11346 11712 11904 12288 14736 15128 15616 15872 17019 17568 17856 18432 18727 19034 19648 22104 22692 23424 23808 28551 29472 30256 31232 31744 34038 35136 35712 36864 37454 38068 39296 44208 45384 46848 47616 56181 57102 58944 60512 62464 63488 68076 70272 71424 74908 76136 78592 85653 88416 90768 93696 95232 112362 114204 117888 121024 124928 126976 136152 140544 142848 149816 152272 157184 168543 171306 176832 181536 187392 190464 224724 228408 235776 242048 249856 272304 281088 285696 299632 304544 314368 337086 342612 353664 363072 374784 380928 449448 456816 471552 484096 544608 562176 571392 580537 599264 609088 628736 674172 685224 707328 726144 749568 898896 913632 943104 968192 1089216 1124352 1142784 1161074 1198528 1218176 1257472 1348344 1370448 1414656 1452288 1741611 1797792 1827264 1886208 1936384 2178432 2248704 2322148 2397056 2436352 2696688 2740896 2829312 2904576 3483222 3595584 3654528 3772416 3872768 4356864 4644296 4794112 4872704 5224833 5393376 5481792 5658624 5809152 6966444 7191168 7309056 7745536 8713728 9288592 9588224 9745408 10449666 10786752 10963584 11317248 11618304 13932888 14382336 14618112 17427456 18577184 19176448 19490816 20899332 21573504 21927168 23236608 27865776 28764672 29236224 34854912 37154368 38352896 38981632 41798664 43147008 43854336 55731552 57529344 58472448 69709824 74308736 76705792 83597328 86294016 87708672 111463104 115058688 116944896 148617472 167194656 172588032 175417344 222926208 230117376 297234944 334389312 345176064 350834688 445852416 594469888 668778624 690352128 891704832 1188939776 1337557248 1783409664 2377879552 2675114496 3566819328 5350228992 7133638656 10700457984 21400915968
• Sum of all divisors σ(n): 65068779776
• Sum of proper divisors (its aliquot sum) s(n): 43667863808
• 21400915968 is an abundant number, because the sum of its proper divisors (43667863808) is greater than itself. Its abundance is 22266947840

Bases of 21400915968

• Binary: 10011111011100110000001000000000000₂
• Hexadecimal: 0x4FB981000
• Base-36: 9TXJWG0

Squares and roots of 21400915968

• 21400915968 squared (21400915968²) is 457999204269397377024
• 21400915968 cubed (21400915968³) is 9801602483980240099690237919232
• The square root of 21400915968 is 146290.5190639503
• The cube root of 21400915968 is 2776.3707090463

Scales and comparisons

• 21,400,915,968 seconds is equal to 680 years, 25 weeks, 18 hours, 52 minutes, 48 seconds.
• To count from 1 to 21,400,915,968 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 21400915968 cubic inches would be around 231.4 feet tall.

Recreational maths with 21400915968

• 21400915968 backwards is 86951900412
• The number of decimal digits it has is: 11
• The sum of 21400915968's digits is 45
• More coming soon!