81480738240

Names of 81480738240

• Cardinal: 81480738240 can be written as Eighty-one billion, four hundred eighty million, seven hundred thirty-eight thousand, two hundred forty.

Scientific notation

• Scientific notation: 8.148073824 × 10¹⁰

Factors of 81480738240

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 415

Divisors of 81480738240

• Number of divisors d(n): 784
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 15 16 18 20 22 24 27 30 32 33 36 40 44 45 48 54 55 60 64 66 72 80 81 88 90 96 99 108 110 113 120 132 135 144 160 162 165 176 180 192 198 216 220 226 240 243 264 270 281 288 297 320 324 330 339 352 360 396 405 432 440 452 480 486 495 528 540 562 565 576 594 648 660 678 704 720 729 792 810 843 864 880 891 904 960 972 990 1017 1056 1080 1124 1130 1188 1215 1243 1296 1320 1356 1405 1440 1458 1485 1584 1620 1686 1695 1728 1760 1782 1808 1944 1980 2034 2112 2160 2248 2260 2376 2430 2486 2529 2592 2640 2673 2712 2810 2880 2916 2970 3051 3091 3168 3240 3372 3390 3520 3564 3616 3645 3729 3888 3960 4068 4215 4320 4455 4496 4520 4752 4860 4972 5058 5085 5184 5280 5346 5424 5620 5832 5940 6102 6182 6215 6336 6480 6744 6780 7128 7232 7290 7458 7587 7776 7920 8019 8136 8430 8640 8910 8992 9040 9153 9273 9504 9720 9944 10116 10170 10560 10692 10848 11187 11240 11664 11880 12204 12364 12430 12645 12960 13365 13488 13560 14256 14580 14916 15174 15255 15455 15552 15840 16038 16272 16860 17820 17984 18080 18306 18546 18645 19008 19440 19888 20232 20340 21384 21696 22374 22480 22761 23328 23760 24408 24728 24860 25290 25920 26730 26976 27120 27459 27819 28512 29160 29832 30348 30510 30910 31680 31753 32076 32544 33561 33720 35640 36160 36612 37092 37290 37935 38880 39776 40095 40464 40680 42768 44748 44960 45522 45765 46365 46656 47520 48816 49456 49720 50580 53460 53952 54240 54918 55638 55935 57024 58320 59664 60696 61020 61820 63506 64152 65088 67122 67440 68283 71280 73224 74184 74580 75870 77760 79552 80190 80928 81360 82377 83457 85536 89496 89920 91044 91530 92730 95040 95259 97632 98912 99440 100683 101160 106920 108480 109836 111276 111870 113805 116640 119328 121392 122040 123640 127012 128304 134244 134880 136566 137295 139095 142560 146448 148368 149160 151740 158765 160380 161856 162720 164754 166914 167805 171072 178992 182088 183060 185460 190518 195264 197824 198880 201366 202320 204849 213840 219672 222552 223740 227610 233280 238656 242784 244080 247280 250371 254024 256608 268488 269760 273132 274590 278190 285120 285777 292896 296736 298320 302049 303480 317530 320760 325440 329508 333828 335610 341415 349283 357984 364176 366120 370920 381036 397760 402732 404640 409698 411885 417285 427680 439344 445104 447480 455220 476295 485568 488160 494560 500742 503415 508048 513216 536976 546264 549180 556380 571554 585792 593472 596640 604098 606960 635060 641520 659016 667656 671220 682830 698566 715968 728352 732240 741840 751113 762072 805464 809280 819396 823770 834570 855360 857331 878688 890208 894960 906147 910440 952590 976320 989120 1001484 1006830 1016096 1024245 1047849 1073952 1092528 1098360 1112760 1143108 1193280 1208196 1213920 1251855 1270120 1283040 1318032 1335312 1342440 1365660 1397132 1428885 1456704 1464480 1483680 1502226 1510245 1524144 1610928 1638792 1647540 1669140 1714662 1746415 1757376 1780416 1789920 1812294 1820880 1905180 2002968 2013660 2032192 2048490 2095698 2147904 2185056 2196720 2225520 2253339 2286216 2416392 2427840 2503710 2540240 2566080 2571993 2636064 2670624 2684880 2731320 2794264 2857770 2928960 2967360 3004452 3020490 3048288 3143547 3221856 3277584 3295080 3338280 3429324 3492830 3579840 3624588 3641760 3755565 3810360 4005936 4027320 4096980 4191396 4286655 4370112 4393440 4451040 4506678 4530735 4572432 4832784 5007420 5080480 5143986 5239245 5272128 5341248 5369760 5462640 5588528 5715540 6008904 6040980 6096576 6287094 6443712 6555168 6590160 6676560 6858648 6985660 7249176 7283520 7511130 7620720 7715979 8011872 8054640 8193960 8382792 8573310 8786880 8902080 9013356 9061470 9144864 9430641 9665568 10014840 10160960 10287972 10478490 10739520 10925280 11177056 11266695 11431080 12017808 12081960 12574188 12859965 13110336 13180320 13353120 13717296 13971320 14498352 15022260 15241440 15431958 15717735 16023744 16109280 16387920 16765584 17146620 18026712 18122940 18289728 18861282 19331136 20029680 20575944 20956980 21850560 22354112 22533390 22862160 23147937 24035616 24163920 25148376 25719930 26360640 26706240 27434592 27942640 28291923 28996704 30044520 30482880 30863916 31435470 32218560 32775840 33531168 34293240 36053424 36245880 37722564 38579895 40059360 41151888 41913960 45066780 45724320 46295874 47153205 48071232 48327840 50296752 51439860 54869184 55885280 56583846 57993408 60089040 61727832 62870940 65551680 67062336 68586480 72106848 72491760 75445128 77159790 80118720 82303776 83827920 84875769 90133560 91448640 92591748 94306410 96655680 100593504 102879720 111770560 113167692 115739685 120178080 123455664 125741880 137172960 141459615 144213696 144983520 150890256 154319580 164607552 167655840 169751538 180267120 185183496 188612820 201187008 205759440 226335384 231479370 240356160 246911328 251483760 254627307 274345920 282919230 289967040 301780512 308639160 335311680 339503076 360534240 370366992 377225640 411518880 424378845 452670768 462958740 493822656 502967520 509254614 565838460 603561024 617278320 679006152 721068480 740733984 754451280 823037760 848757690 905341536 925917480 1005935040 1018509228 1131676920 1234556640 1273136535 1358012304 1481467968 1508902560 1697515380 1810683072 1851834960 2037018456 2263353840 2469113280 2546273070 2716024608 3017805120 3395030760 3703669920 4074036912 4526707680 5092546140 5432049216 6790061520 7407339840 8148073824 9053415360 10185092280 13580123040 16296147648 20370184560 27160246080 40740369120 81480738240
• Sum of all divisors σ(n): 321299714016
• Sum of proper divisors (its aliquot sum) s(n): 239818975776
• 81480738240 is an abundant number, because the sum of its proper divisors (239818975776) is greater than itself. Its abundance is 158338237536

Bases of 81480738240

• Binary: 1001011111000101000010110010111000000₂
• Hexadecimal: 0x12F8A165C0
• Base-36: 11FJJ000

Squares and roots of 81480738240

• 81480738240 squared (81480738240²) is 6639110704135398297600
• 81480738240 cubed (81480738240³) is 540959641430038474204887220224000
• The square root of 81480738240 is 285448.3109776619
• The cube root of 81480738240 is 4335.2916411591

Scales and comparisons

• 81,480,738,240 seconds is equal to 2,590 years, 43 weeks, 3 days, 2 hours, 24 minutes.
• To count from 1 to 81,480,738,240 would take you about five thousand, one hundred eighty-one 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 81480738240 cubic inches would be around 361.3 feet tall.

Recreational maths with 81480738240

• 81480738240 backwards is 04283708418
• 81480738240 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81480738240's digits is 45
• More coming soon!