21203994240

Names of 21203994240

• Cardinal: 21203994240 can be written as Twenty-one billion, two hundred three million, nine hundred ninety-four thousand, two hundred forty.

Scientific notation

• Scientific notation: 2.120399424 × 10¹⁰

Factors of 21203994240

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 8615

Divisors of 21203994240

• Number of divisors d(n): 512
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 13 15 16 18 20 22 24 26 27 30 32 33 36 39 40 44 45 48 52 54 55 60 64 65 66 72 78 80 88 90 96 99 104 108 110 117 120 128 130 132 135 143 144 156 160 165 176 180 192 195 198 208 216 220 234 240 260 264 270 286 288 297 312 320 330 351 352 360 384 390 396 416 429 432 440 468 480 495 520 528 540 572 576 585 594 624 640 660 702 704 715 720 780 792 832 858 864 880 936 960 990 1040 1056 1080 1144 1152 1170 1188 1248 1287 1320 1404 1408 1430 1440 1485 1560 1584 1664 1716 1728 1755 1760 1872 1920 1980 2080 2112 2145 2160 2288 2340 2376 2496 2574 2640 2808 2860 2880 2970 3120 3168 3432 3456 3510 3520 3744 3861 3960 4160 4224 4290 4320 4576 4680 4752 4992 5148 5280 5616 5720 5760 5940 6240 6336 6435 6864 7020 7040 7488 7722 7920 8320 8580 8581 8640 9152 9360 9504 10296 10560 11232 11440 11880 12480 12672 12870 13728 14040 14976 15444 15840 17160 17162 17280 18304 18720 19008 19305 20592 21120 22464 22880 23760 24960 25740 25743 27456 28080 30888 31680 34320 34324 37440 38016 38610 41184 42905 44928 45760 47520 51480 51486 54912 56160 61776 63360 68640 68648 74880 77220 77229 82368 85810 91520 94391 95040 102960 102972 111553 112320 123552 128715 137280 137296 154440 154458 164736 171620 188782 190080 205920 205944 223106 224640 231687 247104 257430 274560 274592 283173 308880 308916 334659 343240 377564 386145 411840 411888 446212 463374 471955 494208 514860 549184 557765 566346 617760 617832 669318 686480 755128 772290 823680 823776 849519 892424 926748 943910 1003977 1029720 1098368 1115530 1132692 1158435 1227083 1235520 1235664 1338636 1372960 1415865 1510256 1544580 1647552 1673295 1699038 1784848 1853496 1887820 2007954 2059440 2231060 2265384 2316870 2454166 2471040 2471328 2548557 2677272 2745920 2831730 3011931 3020512 3089160 3295104 3346590 3398076 3569696 3681249 3706992 3775640 4015908 4118880 4247595 4462120 4530768 4633740 4908332 4942656 5019885 5097114 5354544 5491840 5663460 6023862 6041024 6135415 6178320 6693180 6796152 7139392 7362498 7413984 7551280 8031816 8237760 8495190 8924240 9061536 9267480 9816664 9885312 10039770 10194228 10709088 11043747 11326920 12047724 12082048 12270830 12356640 12742785 13386360 13592304 14278784 14724996 14827968 15059655 15102560 16063632 16475520 16990380 17848480 18123072 18406245 18534960 19633328 20079540 20388456 21418176 22087494 22653840 24095448 24541660 24713280 25485570 26772720 27184608 29449992 29655936 30119310 30205120 32127264 33131241 33980760 35696960 36246144 36812490 37069920 39266656 40159080 40776912 42836352 44174988 45307680 48190896 49083320 49426560 50971140 53545440 54369216 55218735 58899984 60238620 60410240 64254528 66262482 67961520 71393920 73624980 74139840 78533312 80318160 81553824 88349976 90615360 96381792 98166640 101942280 107090880 108738432 110437470 117799968 120477240 128509056 132524964 135923040 147249960 148279680 157066624 160636320 163107648 165656205 176699952 181230720 192763584 196333280 203884560 214181760 220874940 235599936 240954480 265049928 271846080 294499920 321272640 326215296 331312410 353399904 385527168 392666560 407769120 441749880 471199872 481908960 530099856 543692160 588999840 642545280 662624820 706799808 785333120 815538240 883499760 963817920 1060199712 1177999680 1325249640 1413599616 1631076480 1766999520 1927635840 2120399424 2355999360 2650499280 3533999040 4240798848 5300998560 7067998080 10601997120 21203994240
• Sum of all divisors σ(n): 88236691200
• Sum of proper divisors (its aliquot sum) s(n): 67032696960
• 21203994240 is an abundant number, because the sum of its proper divisors (67032696960) is greater than itself. Its abundance is 45828702720

Bases of 21203994240

• Binary: 10011101111110110110100011010000000₂
• Hexadecimal: 0x4EFDB4680
• Base-36: 9QOB6O0

Squares and roots of 21203994240

• 21203994240 squared (21203994240²) is 449609371729953177600
• 21203994240 cubed (21203994240³) is 9533514528411946013300097024000
• The square root of 21203994240 is 145615.9134160823
• The cube root of 21203994240 is 2767.8288120711

Scales and comparisons

• 21,203,994,240 seconds is equal to 674 years, 11 weeks, 3 days, 14 hours, 24 minutes.
• To count from 1 to 21,203,994,240 would take you about one thousand, three hundred forty-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 21203994240 cubic inches would be around 230.7 feet tall.

Recreational maths with 21203994240

• 21203994240 backwards is 04249930212
• 21203994240 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21203994240's digits is 36
• More coming soon!