81140032800

Names of 81140032800

• Cardinal: 81140032800 can be written as Eighty-one billion, one hundred forty million, thirty-two thousand, eight hundred.

Scientific notation

• Scientific notation: 8.11400328 × 10¹⁰

Factors of 81140032800

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 383

Divisors of 81140032800

• Number of divisors d(n): 378
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 25 27 30 32 36 40 45 48 50 54 60 72 75 80 81 90 96 100 108 120 135 144 150 160 162 180 200 216 225 240 243 270 288 300 324 360 373 400 405 432 450 480 486 540 600 648 675 720 729 746 800 810 864 900 972 1080 1119 1200 1215 1296 1350 1440 1458 1492 1620 1800 1865 1944 2025 2160 2238 2400 2430 2592 2700 2916 2984 3240 3357 3600 3645 3730 3888 4050 4320 4476 4860 5400 5595 5832 5968 6075 6480 6714 7200 7290 7460 7776 8100 8952 9325 9720 10071 10800 11190 11664 11936 12150 12960 13428 14580 14920 16200 16785 17904 18225 18650 19440 20142 21600 22380 23328 24300 26856 27975 29160 29840 30213 32400 33570 35808 36450 37300 38880 40284 44760 48600 50355 53712 55950 58320 59680 60426 64800 67140 72900 74600 80568 83925 89520 90639 97200 100710 107424 111900 116640 120852 134280 139129 145800 149200 151065 161136 167850 179040 181278 194400 201420 223800 241704 251775 268560 271917 278258 291600 298400 302130 322272 335700 362556 402840 417387 447600 453195 483408 503550 537120 543834 556516 583200 604260 671400 695645 725112 755325 805680 834774 895200 906390 966816 1007100 1087668 1113032 1208520 1252161 1342800 1359585 1391290 1450224 1510650 1611360 1669548 1812780 2014200 2086935 2175336 2226064 2265975 2417040 2504322 2685600 2719170 2782580 2900448 3021300 3339096 3478225 3625560 3756483 4028400 4173870 4350672 4452128 4531950 4834080 5008644 5438340 5565160 6042600 6260805 6678192 6797925 6956450 7251120 7512966 8056800 8347740 8701344 9063900 10017288 10434675 10876680 11130320 11269449 12085200 12521610 13356384 13595850 13912900 14502240 15025932 16695480 18127800 18782415 20034576 20869350 21753360 22260640 22538898 24170400 25043220 27191700 27825800 30051864 31304025 33390960 33808347 36255600 37564830 40069152 41738700 43506720 45077796 50086440 54383400 55651600 56347245 60103728 62608050 66781920 67616694 72511200 75129660 83477400 90155592 93912075 100172880 101425041 108766800 111303200 112694490 120207456 125216100 135233388 150259320 166954800 169041735 180311184 187824150 200345760 202850082 217533600 225388980 250432200 270466776 281736225 300518640 333909600 338083470 360622368 375648300 405700164 450777960 500864400 507125205 540933552 563472450 601037280 676166940 751296600 811400328 845208675 901555920 1001728800 1014250410 1081867104 1126944900 1352333880 1502593200 1622800656 1690417350 1803111840 2028500820 2253889800 2535626025 2704667760 3005186400 3245601312 3380834700 4057001640 4507779600 5071252050 5409335520 6761669400 8114003280 9015559200 10142504100 13523338800 16228006560 20285008200 27046677600 40570016400 81140032800
• Sum of all divisors σ(n): 297787149387
• Sum of proper divisors (its aliquot sum) s(n): 216647116587
• 81140032800 is an abundant number, because the sum of its proper divisors (216647116587) is greater than itself. Its abundance is 135507083787

Bases of 81140032800

• Binary: 1001011100100010100101010010100100000₂
• Hexadecimal: 0x12E452A520
• Base-36: 119WOI00

Squares and roots of 81140032800

• 81140032800 squared (81140032800²) is 6583704922785075840000
• 81140032800 cubed (81140032800³) is 534202033380302521008087552000000
• The square root of 81140032800 is 284850.8957331889
• The cube root of 81140032800 is 4329.2406365169

Scales and comparisons

• 81,140,032,800 seconds is equal to 2,580 years, 18 hours.
• To count from 1 to 81,140,032,800 would take you about five thousand, one 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 81140032800 cubic inches would be around 360.8 feet tall.

Recreational maths with 81140032800

• 81140032800 backwards is 00823004118
• 81140032800 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81140032800's digits is 27
• More coming soon!