21291084672

Names of 21291084672

• Cardinal: 21291084672 can be written as Twenty-one billion, two hundred ninety-one million, eighty-four thousand, six hundred seventy-two.

Scientific notation

• Scientific notation: 2.1291084672 × 10¹⁰

Factors of 21291084672

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 270

Divisors of 21291084672

• Number of divisors d(n): 512
• Complete list of divisors:
  1 2 3 4 6 8 11 12 13 16 22 24 26 32 33 39 43 44 48 52 64 66 71 78 86 88 96 104 127 128 129 132 142 143 156 172 176 192 208 213 254 258 264 284 286 312 344 352 381 384 416 426 429 473 508 516 528 559 568 572 624 688 704 762 781 832 852 858 923 946 1016 1032 1056 1118 1136 1144 1248 1376 1397 1408 1419 1524 1562 1651 1664 1677 1704 1716 1846 1892 2032 2064 2112 2236 2272 2288 2343 2496 2752 2769 2794 2838 3048 3053 3124 3302 3354 3408 3432 3692 3784 4064 4128 4191 4224 4472 4544 4576 4686 4953 4992 5461 5504 5538 5588 5676 6096 6106 6149 6248 6604 6708 6816 6864 7384 7568 8128 8256 8382 8944 9017 9088 9152 9159 9372 9906 10153 10922 11076 11176 11352 12192 12212 12298 12496 13208 13416 13632 13728 14768 15136 16256 16383 16512 16764 17888 18034 18161 18304 18318 18447 18744 19812 20306 21844 22152 22352 22704 24384 24424 24596 24992 26416 26832 27051 27264 27456 29536 30272 30459 32766 33528 33583 35776 36068 36322 36636 36894 37488 39624 39689 40612 43688 44304 44704 45408 48768 48848 49192 49984 52832 53664 54102 54483 54912 59072 60071 60544 60918 65532 67056 67166 70993 71552 72136 72644 73272 73788 74976 79248 79378 81224 87376 88608 89408 90816 97696 98384 99187 99968 100749 105664 107328 108204 108966 117221 118144 119067 120142 121836 131064 134112 134332 141986 144272 145288 146544 147576 149952 158496 158756 162448 174752 177216 178816 180213 181632 195392 196768 198374 201498 211328 212979 214656 216408 217932 234442 238134 240284 243672 262128 268224 268664 283972 288544 290576 293088 295152 297561 299904 316992 317512 324896 349504 351663 354432 360426 387731 390784 393536 396748 402996 425958 432816 435864 436579 468884 476268 480568 487344 524256 536448 537328 567944 577088 581152 586176 590304 595122 633984 635024 649792 699008 703326 720852 775462 780923 787072 793496 805992 851916 865632 871728 873158 937768 952536 961136 974688 1048512 1074656 1135888 1154176 1162304 1163193 1172352 1180608 1190244 1270048 1289431 1299584 1309737 1406652 1441704 1550924 1561846 1586992 1611984 1703832 1731264 1743456 1746316 1875536 1905072 1922272 1949376 2097024 2149312 2271776 2324608 2326386 2342769 2361216 2380488 2540096 2578862 2619474 2813304 2883408 3101848 3123692 3173984 3223968 3407664 3462528 3486912 3492632 3751072 3810144 3844544 3868293 3898752 4265041 4298624 4543552 4652772 4685538 4760976 5040503 5080192 5157724 5238948 5626608 5766816 6203696 6247384 6347968 6447936 6815328 6973824 6985264 7502144 7620288 7689088 7736586 8530082 9087104 9305544 9371076 9521952 10081006 10315448 10477896 11253216 11533632 12407392 12494768 12695936 12795123 12895872 13630656 13970528 15004288 15121509 15240576 15473172 17060164 18611088 18742152 19043904 20162012 20630896 20955792 22506432 23067264 24814784 24989536 25590246 27261312 27941056 30243018 30946344 34120328 37222176 37484304 38087808 40324024 41261792 41911584 45012864 49629568 49979072 51180492 55445533 55882112 60486036 61892688 68240656 74444352 74968608 80648048 82523584 83823168 99958144 102360984 110891066 120972072 123785376 136481312 148888704 149937216 161296096 165047168 166336599 167646336 204721968 221782132 241944144 247570752 272962624 299874432 322592192 332673198 409443936 443564264 483888288 495141504 545925248 645184384 665346396 818887872 887128528 967776576 1330692792 1637775744 1774257056 1935553152 2661385584 3548514112 5322771168 7097028224 10645542336 21291084672
• Sum of all divisors σ(n): 69487165440
• Sum of proper divisors (its aliquot sum) s(n): 48196080768
• 21291084672 is an abundant number, because the sum of its proper divisors (48196080768) is greater than itself. Its abundance is 26904996096

Bases of 21291084672

• Binary: 10011110101000011000010101110000000₂
• Hexadecimal: 0x4F50C2B80
• Base-36: 9S45U2O

Squares and roots of 21291084672

• 21291084672 squared (21291084672²) is 453310286510273347584
• 21291084672 cubed (21291084672³) is 9651467692778809241275830632448
• The square root of 21291084672 is 145914.6485860827
• The cube root of 21291084672 is 2771.6130383591

Scales and comparisons

• 21,291,084,672 seconds is equal to 676 years, 51 weeks, 3 days, 14 hours, 11 minutes, 12 seconds.
• To count from 1 to 21,291,084,672 would take you about one thousand, three hundred fifty-three 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 21291084672 cubic inches would be around 231 feet tall.

Recreational maths with 21291084672

• 21291084672 backwards is 27648019212
• The number of decimal digits it has is: 11
• The sum of 21291084672's digits is 42
• More coming soon!