21393741824

Names of 21393741824

• Cardinal: 21393741824 can be written as Twenty-one billion, three hundred ninety-three million, seven hundred forty-one thousand, eight hundred twenty-four.

Scientific notation

• Scientific notation: 2.1393741824 × 10¹⁰

Factors of 21393741824

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 76

Divisors of 21393741824

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 4 7 8 13 14 16 23 26 28 31 32 46 49 52 56 62 64 91 92 98 104 112 124 128 161 182 184 196 208 217 224 248 256 299 322 364 368 392 403 416 434 448 496 512 529 598 637 644 713 728 736 784 806 832 868 896 992 1024 1058 1127 1196 1274 1288 1426 1456 1472 1519 1568 1612 1664 1736 1792 1984 2048 2093 2116 2254 2392 2548 2576 2821 2852 2912 2944 3038 3136 3224 3328 3472 3584 3703 3968 4186 4232 4508 4784 4991 5096 5152 5642 5704 5824 5888 6076 6272 6448 6656 6877 6944 7168 7406 7936 8372 8464 9016 9269 9568 9982 10192 10304 11284 11408 11648 11776 12152 12544 12896 13312 13754 13888 14336 14651 14812 15872 16399 16744 16928 18032 18538 19136 19747 19964 20384 20608 22568 22816 23296 23552 24304 25088 25792 25921 26624 27508 27776 29302 29624 31744 32798 33488 33856 34937 36064 37076 38272 39494 39928 40768 41216 45136 45632 46592 47104 48139 48608 50176 51584 51842 55016 55552 58604 59248 63488 64883 65596 66976 67712 69874 72128 74152 76544 78988 79856 81536 82432 90272 91264 93184 96278 97216 100352 103168 103684 110032 111104 114793 117208 118496 129766 131192 133952 135424 139748 144256 148304 153088 157976 159712 163072 164864 180544 182528 186368 192556 194432 206336 207368 213187 220064 222208 229586 234416 236992 259532 262384 267904 270848 279496 288512 296608 306176 315952 319424 326144 329728 336973 361088 365056 385112 388864 412672 414736 426374 440128 444416 454181 459172 468832 473984 519064 524768 535808 541696 558992 577024 593216 612352 631904 638848 652288 673946 722176 730112 770224 777728 803551 825344 829472 852748 880256 908362 918344 937664 947968 1038128 1049536 1071616 1083392 1117984 1154048 1186432 1263808 1277696 1304576 1347892 1444352 1460224 1492309 1540448 1555456 1607102 1658944 1705496 1760512 1816724 1836688 1875328 1895936 2076256 2099072 2143232 2235968 2308096 2372864 2527616 2555392 2695784 2888704 2984618 3080896 3110912 3214204 3317888 3410992 3521024 3633448 3673376 3750656 3791872 4152512 4198144 4286464 4471936 4745728 5055232 5110784 5391568 5777408 5969236 6161792 6428408 6635776 6821984 7042048 7266896 7346752 7501312 7583744 8305024 8396288 8943872 9491456 10110464 10221568 10446163 10783136 11938472 12323584 12856816 13271552 13643968 14084096 14533792 14693504 15002624 16610048 16792576 17887744 18982912 20220928 20892326 21566272 23876944 24647168 25713632 26543104 27287936 29067584 29387008 30005248 33220096 33585152 35775488 40441856 41784652 43132544 47753888 49294336 51427264 53086208 54575872 58135168 58774016 66440192 71550976 83569304 86265088 95507776 98588672 102854528 109151744 116270336 117548032 132880384 167138608 172530176 191015552 205709056 218303488 232540672 235096064 334277216 345060352 382031104 411418112 436606976 465081344 668554432 690120704 764062208 822836224 930162688 1337108864 1528124416 1645672448 2674217728 3056248832 5348435456 10696870912 21393741824
• Sum of all divisors σ(n): 57827165760
• Sum of proper divisors (its aliquot sum) s(n): 36433423936
• 21393741824 is an abundant number, because the sum of its proper divisors (36433423936) is greater than itself. Its abundance is 15039682112

Bases of 21393741824

• Binary: 10011111011001010101001100000000000₂
• Hexadecimal: 0x4FB2A9800
• Base-36: 9TTA4U8

Squares and roots of 21393741824

• 21393741824 squared (21393741824²) is 457692189231966846976
• 21393741824 cubed (21393741824³) is 9791748531290051571931859124224
• The square root of 21393741824 is 146265.9968140237
• The cube root of 21393741824 is 2776.0604371343

Scales and comparisons

• 21,393,741,824 seconds is equal to 680 years, 13 weeks, 1 day, 18 hours, 3 minutes, 44 seconds.
• To count from 1 to 21,393,741,824 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 21393741824 cubic inches would be around 231.3 feet tall.

Recreational maths with 21393741824

• 21393741824 backwards is 42814739312
• The number of decimal digits it has is: 11
• The sum of 21393741824's digits is 44
• More coming soon!