81397232000

Names of 81397232000

• Cardinal: 81397232000 can be written as Eighty-one billion, three hundred ninety-seven million, two hundred thirty-two thousand.

Scientific notation

• Scientific notation: 8.1397232 × 10¹⁰

Factors of 81397232000

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 61

Divisors of 81397232000

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 25 28 32 35 40 47 49 50 56 64 70 80 94 98 100 112 125 128 140 160 175 188 196 200 224 235 245 250 280 320 329 350 376 392 400 448 470 490 500 560 640 658 700 752 784 800 875 896 940 980 1000 1120 1175 1225 1316 1400 1504 1568 1600 1645 1750 1880 1960 2000 2209 2240 2303 2350 2450 2632 2800 3008 3136 3200 3290 3500 3760 3920 4000 4418 4480 4606 4700 4900 5264 5600 5875 6016 6125 6272 6580 7000 7520 7840 8000 8225 8836 9212 9400 9800 10528 11045 11200 11515 11750 12250 13160 14000 15040 15463 15680 16000 16450 17672 18424 18800 19600 21056 22090 22400 23030 23500 24500 26320 28000 30080 30926 31360 32900 35344 36848 37600 39200 41125 42112 44180 46060 47000 49000 52640 55225 56000 57575 61852 65800 70688 73696 75200 77315 78400 82250 88360 92120 94000 98000 103823 105280 108241 110450 112000 115150 123704 131600 141376 147392 150400 154630 156800 164500 176720 184240 188000 196000 207646 210560 216482 220900 230300 247408 263200 276125 282752 287875 294784 309260 329000 353440 368480 376000 386575 392000 415292 432964 441800 460600 494816 519115 526400 541205 552250 575750 618520 658000 706880 726761 736960 752000 773150 784000 830584 865928 883600 921200 989632 1038230 1052800 1082410 1104500 1151500 1237040 1316000 1413760 1453522 1473920 1546300 1661168 1731856 1767200 1842400 1932875 1979264 2076460 2164820 2209000 2303000 2474080 2595575 2632000 2706025 2907044 3092600 3322336 3463712 3534400 3633805 3684800 3865750 4152920 4329640 4418000 4606000 4948160 5087327 5191150 5264000 5412050 5814088 6185200 6644672 6927424 7068800 7267610 7369600 7731500 8305840 8659280 8836000 9212000 9896320 10174654 10382300 10824100 11628176 12370400 12977875 13289344 13530125 13854848 14535220 15463000 16611680 17318560 17672000 18169025 18424000 20349308 20764600 21648200 23256352 24740800 25436635 25955750 27060250 29070440 30926000 33223360 34637120 35344000 36338050 36848000 40698616 41529200 43296400 46512704 49481600 50873270 51911500 54120500 58140880 61852000 66446720 69274240 72676100 81397232 83058400 86592800 90845125 93025408 101746540 103823000 108241000 116281760 123704000 127183175 145352200 162794464 166116800 173185600 181690250 203493080 207646000 216482000 232563520 247408000 254366350 290704400 325588928 332233600 346371200 363380500 406986160 415292000 432964000 465127040 508732700 581408800 635915875 651177856 726761000 813972320 830584000 865928000 1017465400 1162817600 1271831750 1453522000 1627944640 1661168000 1731856000 2034930800 2325635200 2543663500 2907044000 3255889280 4069861600 5087327000 5814088000 8139723200 10174654000 11628176000 16279446400 20349308000 40698616000 81397232000
• Sum of all divisors σ(n): 240532156800
• Sum of proper divisors (its aliquot sum) s(n): 159134924800
• 81397232000 is an abundant number, because the sum of its proper divisors (159134924800) is greater than itself. Its abundance is 77737692800

Bases of 81397232000

• Binary: 1001011110011101001110011000110000000₂
• Hexadecimal: 0x12F3A73180
• Base-36: 11E5T668

Squares and roots of 81397232000

• 81397232000 squared (81397232000²) is 6625509377261824000000
• 81397232000 cubed (81397232000³) is 539298123899156212871168000000000
• The square root of 81397232000 is 285302.0013950131
• The cube root of 81397232000 is 4333.8101145349

Scales and comparisons

• 81,397,232,000 seconds is equal to 2,588 years, 9 weeks, 2 days, 14 hours, 13 minutes, 20 seconds.
• To count from 1 to 81,397,232,000 would take you about five thousand, one hundred seventy-six 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 81397232000 cubic inches would be around 361.2 feet tall.

Recreational maths with 81397232000

• 81397232000 backwards is 00023279318
• 81397232000 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81397232000's digits is 35
• More coming soon!