21081646080

Names of 21081646080

• Cardinal: 21081646080 can be written as Twenty-one billion, eighty-one million, six hundred forty-six thousand and eighty.

Scientific notation

• Scientific notation: 2.108164608 × 10¹⁰

Factors of 21081646080

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 239

Divisors of 21081646080

• Number of divisors d(n): 792
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 15 16 18 19 20 22 24 30 32 33 36 38 40 44 45 48 55 57 60 64 66 72 76 80 88 90 95 96 99 110 114 120 121 128 132 144 152 160 165 171 176 180 190 192 198 199 209 220 228 240 242 256 264 285 288 304 320 330 342 352 360 363 380 384 396 398 418 440 456 480 484 495 512 528 570 576 597 605 608 627 640 660 684 704 720 726 760 768 792 796 836 855 880 912 960 968 990 995 1024 1045 1056 1089 1140 1152 1194 1210 1216 1254 1280 1320 1368 1408 1440 1452 1520 1536 1584 1592 1672 1710 1760 1791 1815 1824 1881 1920 1936 1980 1990 2090 2112 2178 2189 2280 2299 2304 2388 2420 2432 2508 2560 2640 2736 2816 2880 2904 2985 3040 3072 3135 3168 3184 3344 3420 3520 3582 3630 3648 3762 3781 3840 3872 3960 3980 4180 4224 4356 4378 4560 4598 4608 4776 4840 4864 5016 5120 5280 5445 5472 5632 5760 5808 5970 6080 6270 6336 6368 6567 6688 6840 6897 7040 7164 7260 7296 7524 7562 7680 7744 7920 7960 8360 8448 8712 8756 8955 9120 9196 9216 9405 9552 9680 9728 10032 10560 10890 10944 10945 11264 11343 11495 11520 11616 11940 12160 12540 12672 12736 13134 13376 13680 13794 14080 14328 14520 14592 15048 15124 15360 15488 15840 15920 16720 16896 17424 17512 17910 18240 18392 18810 18905 19104 19360 19456 19701 20064 20691 21120 21780 21888 21890 22686 22990 23040 23232 23880 24079 24320 25080 25344 25472 26268 26752 27360 27588 28160 28656 29040 29184 30096 30248 30976 31680 31840 32835 33440 33792 34029 34485 34848 35024 35820 36480 36784 37620 37810 38208 38720 39402 40128 41382 41591 42240 43560 43776 43780 45372 45980 46080 46464 47760 48158 48640 50160 50688 50944 52536 53504 54720 55176 56320 56715 57312 58080 58368 60192 60496 61952 63360 63680 65670 66880 68058 68970 69696 70048 71640 72237 72960 73568 75240 75620 76416 77440 78804 80256 82764 83182 84480 87120 87552 87560 90744 91960 92928 95520 96316 97280 98505 100320 101376 101888 103455 105072 107008 109440 110352 113430 114624 116160 120384 120395 120992 123904 124773 126720 127360 131340 133760 136116 137940 139392 140096 143280 144474 145920 147136 150480 151240 152832 154880 157608 160512 165528 166364 168960 170145 174240 175104 175120 181488 183920 185856 191040 192632 197010 200640 203776 206910 207955 210144 214016 216711 218880 220704 226860 229248 232320 240768 240790 241984 249546 253440 254720 262680 267520 272232 275880 278784 280192 286560 288948 291840 294272 300960 302480 305664 309760 315216 321024 331056 332728 340290 348480 350240 361185 362976 367840 371712 374319 382080 385264 394020 401280 413820 415910 420288 433422 437760 441408 453720 457501 458496 464640 481536 481580 483968 499092 506880 509440 525360 535040 544464 551760 557568 560384 573120 577896 588544 601920 604960 611328 619520 623865 630432 642048 662112 665456 680580 696960 700480 722370 725952 735680 748638 764160 770528 788040 802560 827640 831820 840576 866844 875520 882816 907440 915002 916992 929280 963072 963160 967936 998184 1018880 1050720 1070080 1083555 1088928 1103520 1115136 1120768 1146240 1155792 1177088 1203840 1209920 1247730 1260864 1324224 1330912 1361160 1372503 1393920 1400960 1444740 1451904 1471360 1497276 1528320 1541056 1576080 1605120 1655280 1663640 1681152 1733688 1765632 1814880 1830004 1833984 1858560 1871595 1926144 1926320 1935872 1996368 2101440 2167110 2177856 2207040 2241536 2287505 2292480 2311584 2354176 2407680 2419840 2495460 2521728 2648448 2661824 2722320 2745006 2787840 2801920 2889480 2903808 2942720 2994552 3056640 3082112 3152160 3210240 3310560 3327280 3362304 3467376 3531264 3629760 3660008 3743190 3852640 3871744 3992736 4117509 4202880 4334220 4355712 4414080 4575010 4584960 4623168 4815360 4839680 4990920 5043456 5296896 5323648 5444640 5490012 5575680 5603840 5778960 5807616 5885440 5989104 6164224 6304320 6621120 6654560 6724608 6862515 6934752 7062528 7259520 7320016 7486380 7705280 7985472 8235018 8405760 8668440 8711424 8828160 9150020 9169920 9246336 9630720 9679360 9981840 10086912 10593792 10647296 10889280 10980024 11207680 11557920 11615232 11770880 11978208 12328448 12608640 13242240 13309120 13725030 13869504 14519040 14640032 14972760 15410560 15970944 16470036 16811520 17336880 17422848 17656320 18300040 18492672 19358720 19963680 20173824 20587545 21187584 21294592 21778560 21960048 23115840 23956416 24656896 25217280 26484480 26618240 27450060 27739008 29038080 29280064 29945520 30821120 31941888 32940072 33623040 34673760 34845696 35312640 36600080 36985344 39927360 41175090 42589184 43557120 43920096 46231680 47912832 50434560 52968960 53236480 54900120 55478016 58076160 58560128 59891040 61642240 63883776 65880144 69347520 73200160 73970688 79854720 82350180 87114240 87840192 92463360 95825664 100869120 105937920 106472960 109800240 110956032 117120256 119782080 123284480 127767552 131760288 138695040 146400320 159709440 164700360 174228480 175680384 184926720 191651328 212945920 219600480 221912064 234240512 239564160 263520576 277390080 292800640 319418880 329400720 351360768 369853440 383302656 439200960 468481024 479128320 527041152 554780160 585601280 638837760 658801440 702721536 878401920 958256640 1054082304 1109560320 1171202560 1317602880 1405443072 1756803840 1916513280 2108164608 2342405120 2635205760 3513607680 4216329216 5270411520 7027215360 10540823040 21081646080
• Sum of all divisors σ(n): 84942312000
• Sum of proper divisors (its aliquot sum) s(n): 63860665920
• 21081646080 is an abundant number, because the sum of its proper divisors (63860665920) is greater than itself. Its abundance is 42779019840

Bases of 21081646080

• Binary: 10011101000100100000110010000000000₂
• Hexadecimal: 0x4E8906400
• Base-36: 9ONGU80

Squares and roots of 21081646080

• 21081646080 squared (21081646080²) is 444435801442379366400
• 21081646080 cubed (21081646080³) is 9369438271289395315539443712000
• The square root of 21081646080 is 145195.1999206585
• The cube root of 21081646080 is 2762.4950342995

Scales and comparisons

• 21,081,646,080 seconds is equal to 670 years, 17 weeks, 1 day, 12 hours, 48 minutes.
• To count from 1 to 21,081,646,080 would take you about one thousand, three hundred forty 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 21081646080 cubic inches would be around 230.2 feet tall.

Recreational maths with 21081646080

• 21081646080 backwards is 08064618012
• 21081646080 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21081646080's digits is 36
• More coming soon!