81807440400

Names of 81807440400

• Cardinal: 81807440400 can be written as Eighty-one billion, eight hundred seven million, four hundred forty thousand, four hundred.

Scientific notation

• Scientific notation: 8.18074404 × 10¹⁰

Factors of 81807440400

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 244

Divisors of 81807440400

• Number of divisors d(n): 675
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 25 27 28 30 35 36 40 42 45 48 49 50 54 56 60 63 70 72 75 80 81 84 90 98 100 105 108 112 120 126 135 140 144 147 150 162 168 175 180 189 196 200 210 216 225 227 240 245 252 270 280 294 300 315 324 336 350 360 378 392 400 405 420 432 441 450 454 490 504 525 540 560 567 588 600 630 648 675 681 700 720 735 756 784 810 840 882 900 908 945 980 1008 1050 1080 1134 1135 1176 1200 1225 1260 1296 1323 1350 1362 1400 1470 1512 1575 1589 1620 1680 1764 1800 1816 1890 1960 2025 2043 2100 2160 2205 2268 2270 2352 2450 2520 2646 2700 2724 2800 2835 2940 3024 3150 3178 3240 3405 3528 3600 3632 3675 3780 3920 3969 4050 4086 4200 4410 4536 4540 4725 4767 4900 5040 5292 5400 5448 5670 5675 5880 6129 6300 6356 6480 6615 6810 7056 7350 7560 7938 7945 8100 8172 8400 8820 9072 9080 9450 9534 9800 10215 10584 10800 10896 11025 11123 11340 11350 11760 12258 12600 12712 13230 13620 14175 14301 14700 15120 15876 15890 16200 16344 17025 17640 18160 18387 18900 19068 19600 19845 20430 21168 22050 22246 22680 22700 23835 24516 25200 25424 26460 27240 28350 28602 29400 30645 31752 31780 32400 32688 33075 33369 34050 35280 36774 37800 38136 39690 39725 40860 42903 44100 44492 45360 45400 47670 49032 51075 51529 52920 54480 55615 56700 57204 58800 61290 63504 63560 66150 66738 68100 71505 73548 75600 76272 79380 79450 81720 85806 88200 88984 90800 91935 95340 98064 99225 100107 102150 103058 105840 111230 113400 114408 119175 122580 127120 128709 132300 133476 136200 143010 147096 153225 154587 158760 158900 163440 166845 171612 176400 177968 183870 190680 198450 200214 204300 206116 214515 222460 226800 228816 238350 245160 257418 257645 264600 266952 272400 278075 286020 294192 300321 306450 309174 317520 317800 333690 343224 357525 360703 367740 381360 396900 400428 408600 412232 429030 444920 459675 463761 476700 490320 500535 514836 515290 529200 533904 556150 572040 600642 612900 618348 635600 643545 667380 686448 715050 721406 735480 772935 793800 800856 817200 824464 834225 858060 889840 900963 919350 927522 953400 1001070 1029672 1030580 1072575 1082109 1112300 1144080 1201284 1225800 1236696 1287090 1288225 1334760 1391283 1430100 1442812 1470960 1501605 1545870 1587600 1601712 1668450 1716120 1801926 1803515 1838700 1855044 1906800 2002140 2059344 2061160 2145150 2164218 2224600 2318805 2402568 2451600 2473392 2502675 2524921 2574180 2576450 2669520 2782566 2860200 2885624 3003210 3091740 3217725 3246327 3336900 3432240 3603852 3607030 3677400 3710088 3864675 4004280 4122320 4173849 4290300 4328436 4449200 4504815 4637610 4805136 5005350 5049842 5148360 5152900 5410545 5565132 5720400 5771248 6006420 6183480 6435450 6492654 6673800 6956415 7207704 7214060 7354800 7420176 7508025 7574763 7729350 8008560 8347698 8580600 8656872 9009630 9017575 9275220 9738981 10010700 10099684 10296720 10305800 10821090 11130264 11594025 12012840 12366960 12624605 12870900 12985308 13347600 13912830 14415408 14428120 15016050 15149526 15458700 16231635 16695396 17161200 17313744 18019260 18035150 18550440 19477962 20021400 20199368 20611600 20869245 21642180 22260528 22524075 22724289 23188050 24025680 25249210 25741800 25970616 27052725 27825660 28856240 29216943 30032100 30299052 30917400 32463270 33390792 34782075 36038520 36070300 37100880 37873815 38955924 40042800 40398736 41738490 43284360 45048150 45448578 46376100 48694905 50498420 51483600 51941232 54105450 55651320 58433886 60064200 60598104 61834800 63123025 64926540 66781584 68172867 69564150 72077040 72140600 75747630 77911848 81158175 83476980 86568720 90096300 90897156 92752200 97389810 100996840 104346225 108210900 111302640 113621445 116867772 120128400 121196208 126246050 129853080 136345734 139128300 144281200 146084715 151495260 155823696 162316350 166953960 180192600 181794312 185504400 189369075 194779620 201993680 204518601 208692450 216421800 227242890 233735544 243474525 252492100 259706160 272691468 278256600 292169430 302990520 324632700 333907920 340864335 360385200 363588624 378738150 389559240 409037202 417384900 432843600 454485780 467471088 486949050 504984200 545382936 556513200 568107225 584338860 605981040 649265400 681728670 730423575 757476300 779118480 818074404 834769800 908971560 973898100 1009968400 1022593005 1090765872 1136214450 1168677720 1298530800 1363457340 1460847150 1514952600 1636148808 1669539600 1704321675 1817943120 1947796200 2045186010 2272428900 2337355440 2726914680 2921694300 3029905200 3272297616 3408643350 3895592400 4090372020 4544857800 5112965025 5453829360 5843388600 6817286700 8180744040 9089715600 10225930050 11686777200 13634573400 16361488080 20451860100 27269146800 40903720200 81807440400
• Sum of all divisors σ(n): 343046275869
• Sum of proper divisors (its aliquot sum) s(n): 261238835469
• 81807440400 is an abundant number, because the sum of its proper divisors (261238835469) is greater than itself. Its abundance is 179431395069

Bases of 81807440400

• Binary: 1001100001100000110100111101000010000₂
• Hexadecimal: 0x130C1A7A10
• Base-36: 11KY1D00

Squares and roots of 81807440400

• 81807440400 squared (81807440400²) is 6692457304799552160000
• 81807440400 cubed (81807440400³) is 547492802091933997275891264000000
• 81807440400 is a perfect square number. Its square root is 286020
• The cube root of 81807440400 is 4341.0781227209

Scales and comparisons

• 81,807,440,400 seconds is equal to 2,601 years, 11 weeks, 4 days, 9 hours.
• To count from 1 to 81,807,440,400 would take you about five thousand, two hundred two 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 81807440400 cubic inches would be around 361.8 feet tall.

Recreational maths with 81807440400

• 81807440400 backwards is 00404470818
• 81807440400 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81807440400's digits is 36
• More coming soon!