81827850240

Names of 81827850240

• Cardinal: 81827850240 can be written as Eighty-one billion, eight hundred twenty-seven million, eight hundred fifty thousand, two hundred forty.

Scientific notation

• Scientific notation: 8.182785024 × 10¹⁰

Factors of 81827850240

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 487

Divisors of 81827850240

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 19 20 24 27 30 32 36 37 38 40 45 48 54 57 60 64 72 74 76 80 90 95 96 108 111 114 120 128 135 144 148 152 160 171 180 185 190 192 216 222 228 240 256 270 285 288 296 304 320 333 342 360 370 380 384 421 432 444 456 480 512 513 540 555 570 576 592 608 640 666 684 703 720 740 760 768 842 855 864 888 912 960 999 1024 1026 1080 1110 1140 1152 1184 1216 1263 1280 1332 1368 1406 1440 1480 1520 1536 1665 1684 1710 1728 1776 1824 1920 1998 2048 2052 2105 2109 2160 2220 2280 2304 2368 2432 2526 2560 2565 2664 2736 2812 2880 2960 3040 3072 3330 3368 3420 3456 3515 3552 3648 3789 3840 3996 4104 4210 4218 4320 4440 4560 4608 4736 4864 4995 5052 5120 5130 5328 5472 5624 5760 5920 6080 6144 6315 6327 6660 6736 6840 6912 7030 7104 7296 7578 7680 7992 7999 8208 8420 8436 8640 8880 9120 9216 9472 9728 9990 10104 10240 10260 10545 10656 10944 11248 11367 11520 11840 12160 12630 12654 13320 13472 13680 13824 14060 14208 14592 15156 15360 15577 15984 15998 16416 16840 16872 17280 17760 18240 18432 18944 18945 18981 19456 19980 20208 20520 21090 21312 21888 22496 22734 23040 23680 23997 24320 25260 25308 26640 26944 27360 27648 28120 28416 29184 30312 30720 31154 31635 31968 31996 32832 33680 33744 34560 35520 36480 37888 37890 37962 38912 39960 39995 40416 41040 42180 42624 43776 44992 45468 46080 46731 47360 47994 48640 50520 50616 53280 53888 54720 55296 56240 56832 56835 58368 60624 62308 63270 63936 63992 65664 67360 67488 69120 71040 71991 72960 75776 75780 75924 77885 79920 79990 80832 82080 84360 85248 87552 89984 90936 92160 93462 94720 94905 95988 97280 101040 101232 106560 107776 109440 112480 113664 113670 116736 119985 121248 124616 126540 127872 127984 131328 134720 134976 138240 140193 142080 143982 145920 151560 151848 155770 159840 159980 161664 164160 168720 170496 175104 179968 181872 186924 189440 189810 191976 194560 202080 202464 213120 215552 215973 218880 224960 227328 227340 233655 239970 242496 249232 253080 255744 255968 262656 269440 269952 276480 280386 284160 287964 291840 295963 303120 303696 311540 319680 319960 323328 328320 337440 340992 350208 359936 359955 363744 373848 378880 379620 383952 404160 404928 420579 426240 431104 431946 437760 449920 454680 467310 479940 484992 498464 506160 511488 511936 525312 538880 539904 560772 568320 575928 583680 591926 606240 607392 623080 639360 639920 646656 656640 674880 681984 700965 719872 719910 727488 747696 759240 767904 808320 809856 841158 852480 862208 863892 875520 887889 899840 909360 934620 959880 969984 996928 1012320 1022976 1023872 1050624 1077760 1079808 1079865 1121544 1136640 1151856 1183852 1212480 1214784 1246160 1278720 1279840 1293312 1313280 1349760 1401930 1439744 1439820 1454976 1479815 1495392 1518480 1535808 1616640 1619712 1682316 1704960 1727784 1751040 1775778 1799680 1818720 1869240 1919760 1939968 1993856 2024640 2045952 2047744 2102895 2155520 2159616 2159730 2243088 2303712 2367704 2424960 2429568 2492320 2557440 2559680 2586624 2626560 2663667 2699520 2803860 2879640 2909952 2959630 2990784 3036960 3071616 3233280 3239424 3364632 3409920 3455568 3551556 3599360 3637440 3738480 3839520 3879936 3987712 4049280 4095488 4205790 4311040 4319232 4319460 4439445 4486176 4607424 4735408 4849920 4859136 4984640 5114880 5119360 5253120 5327334 5399040 5607720 5759280 5819904 5919260 5981568 6073920 6143232 6466560 6478848 6729264 6911136 7103112 7198720 7274880 7476960 7679040 7759872 7975424 7991001 8098560 8190976 8411580 8638920 8878890 8972352 9214848 9470816 9699840 9718272 9969280 10229760 10238720 10654668 10798080 11215440 11518560 11639808 11838520 11963136 12147840 12286464 12933120 12957696 13318335 13458528 13822272 14206224 14549760 14953920 15358080 15950848 15982002 16197120 16381952 16823160 17277840 17757780 17944704 18429696 18941632 19399680 19436544 19938560 20477440 21309336 21596160 22430880 23037120 23279616 23677040 23926272 24295680 24572928 26636670 26917056 27644544 28412448 29099520 29907840 30716160 31901696 31964004 32394240 33646320 34555680 35515560 35889408 36859392 37883264 38799360 38873088 39877120 39955005 40954880 42618672 44861760 46074240 47354080 47852544 48591360 49145856 53273340 53834112 55289088 56824896 58199040 59815680 61432320 63928008 64788480 67292640 69111360 71031120 71778816 73718784 75766528 79754240 79910010 81909760 85237344 89723520 92148480 94708160 95705088 97182720 106546680 107668224 110578176 113649792 116398080 119631360 122864640 127856016 134585280 138222720 142062240 143557632 147437568 151533056 159508480 159820020 170474688 179447040 184296960 189416320 194365440 213093360 215336448 221156352 227299584 239262720 245729280 255712032 269170560 276445440 284124480 287115264 303066112 319640040 340949376 358894080 368593920 378832640 426186720 430672896 442312704 454599168 478525440 511424064 538341120 552890880 568248960 606132224 639280080 681898752 717788160 737187840 757665280 852373440 861345792 909198336 1022848128 1076682240 1105781760 1136497920 1278560160 1363797504 1435576320 1515330560 1704746880 1818396672 2045696256 2153364480 2211563520 2272995840 2557120320 2727595008 3030661120 3409493760 4091392512 4306728960 4545991680 5114240640 5455190016 6818987520 8182785024 9091983360 10228481280 13637975040 16365570048 20456962560 27275950080 40913925120 81827850240
• Sum of all divisors σ(n): 315203616000
• Sum of proper divisors (its aliquot sum) s(n): 233375765760
• 81827850240 is an abundant number, because the sum of its proper divisors (233375765760) is greater than itself. Its abundance is 151547915520

Bases of 81827850240

• Binary: 1001100001101010100011110100000000000₂
• Hexadecimal: 0x130D51E800
• Base-36: 11LA6TC0

Squares and roots of 81827850240

• 81827850240 squared (81827850240²) is 6695797074899868057600
• 81827850240 cubed (81827850240³) is 547902680282336466413052493824000
• The square root of 81827850240 is 286055.6768183425
• The cube root of 81827850240 is 4341.4391059529

Scales and comparisons

• 81,827,850,240 seconds is equal to 2,601 years, 45 weeks, 2 days, 14 hours, 24 minutes.
• To count from 1 to 81,827,850,240 would take you about five thousand, two hundred 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 81827850240 cubic inches would be around 361.8 feet tall.

Recreational maths with 81827850240

• 81827850240 backwards is 04205872818
• 81827850240 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81827850240's digits is 45
• More coming soon!