21640398912

Names of 21640398912

• Cardinal: 21640398912 can be written as Twenty-one billion, six hundred forty million, three hundred ninety-eight thousand, nine hundred twelve.

Scientific notation

• Scientific notation: 2.1640398912 × 10¹⁰

Factors of 21640398912

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 113

Divisors of 21640398912

• Number of divisors d(n): 336
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 16 18 22 24 27 32 33 36 44 48 54 64 66 72 88 96 97 99 108 121 132 144 176 192 194 198 216 242 264 288 291 297 352 363 388 396 432 484 528 576 582 594 704 726 776 792 864 873 968 1056 1067 1089 1164 1188 1331 1452 1552 1584 1728 1746 1936 2112 2134 2178 2328 2376 2619 2662 2904 3104 3168 3201 3267 3492 3872 3993 4268 4356 4656 4752 5238 5324 5808 6208 6336 6402 6534 6984 7744 7986 8536 8712 9312 9409 9504 9603 10476 10648 11616 11737 11979 12804 13068 13968 15972 17072 17424 18624 18818 19008 19206 20952 21296 23232 23474 23958 25608 26136 27936 28227 28809 31944 34144 34848 35211 35937 37636 38412 41904 42592 46948 47916 51216 52272 55872 56454 57618 63888 68288 69696 70422 71874 75272 76824 83808 84681 85184 93896 95832 102432 103499 104544 105633 112908 115236 127776 129107 140844 143748 150544 153648 167616 169362 187792 191664 204864 206998 209088 211266 225816 230472 254043 255552 258214 281688 287496 301088 307296 310497 316899 338724 375584 383328 387321 413996 422532 451632 460944 508086 516428 563376 574992 602176 614592 620994 633798 677448 751168 766656 774642 827992 845064 903264 921888 931491 1016172 1032856 1126752 1138489 1149984 1161963 1241988 1267596 1354896 1549284 1655984 1690128 1806528 1843776 1862982 2032344 2065712 2253504 2276978 2299968 2323926 2483976 2535192 2709792 2794473 3098568 3311968 3380256 3415467 3485889 3725964 4064688 4131424 4553956 4647852 4967952 5070384 5419584 5588946 6197136 6623936 6760512 6830934 6971778 7451928 8129376 8262848 9107912 9295704 9935904 10140768 10246401 11177892 12394272 12523379 13661868 13943556 14903856 16258752 18215824 18591408 19871808 20281536 20492802 22355784 24788544 25046758 27323736 27887112 29807712 30739203 36431648 37182816 37570137 40985604 44711568 50093516 54647472 55774224 59615424 61478406 72863296 74365632 75140274 81971208 89423136 100187032 109294944 111548448 112710411 122956812 150280548 163942416 178846272 200374064 218589888 223096896 225420822 245913624 300561096 327884832 338131233 400748128 450841644 491827248 601122192 655769664 676262466 801496256 901683288 983654496 1202244384 1352524932 1803366576 1967308992 2404488768 2705049864 3606733152 5410099728 7213466304 10820199456 21640398912
• Sum of all divisors σ(n): 70704699840
• Sum of proper divisors (its aliquot sum) s(n): 49064300928
• 21640398912 is an abundant number, because the sum of its proper divisors (49064300928) is greater than itself. Its abundance is 27423902016

Bases of 21640398912

• Binary: 10100001001110111100100100001000000₂
• Hexadecimal: 0x509DE4840
• Base-36: 9XW4UO0

Squares and roots of 21640398912

• 21640398912 squared (21640398912²) is 468306865070490783744
• 21640398912 cubed (21640398912³) is 10134347373353579559839684886528
• The square root of 21640398912 is 147106.7602525459
• The cube root of 21640398912 is 2786.6884701279

Scales and comparisons

• 21,640,398,912 seconds is equal to 688 years, 5 weeks, 13 hours, 55 minutes, 12 seconds.
• To count from 1 to 21,640,398,912 would take you about one thousand, three hundred seventy-six 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 21640398912 cubic inches would be around 232.2 feet tall.

Recreational maths with 21640398912

• 21640398912 backwards is 21989304612
• The number of decimal digits it has is: 11
• The sum of 21640398912's digits is 45
• More coming soon!