812421678420

Names of 812421678420

• Cardinal: 812421678420 can be written as Eight hundred twelve billion, four hundred twenty-one million, six hundred seventy-eight thousand, four hundred twenty.

Scientific notation

• Scientific notation: 8.1242167842 × 10¹¹

Factors of 812421678420

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 281

Divisors of 812421678420

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 9 10 11 12 15 18 20 22 30 33 36 37 44 45 55 60 66 74 90 99 110 111 132 148 165 180 185 198 220 222 223 330 333 370 396 407 444 446 495 555 660 666 669 740 814 892 990 1110 1115 1221 1332 1338 1628 1665 1980 2007 2035 2220 2230 2442 2453 2676 3330 3345 3663 4014 4070 4460 4884 4906 6105 6660 6690 7326 7359 8028 8140 8251 9812 10035 12210 12265 13380 14652 14718 16502 18315 20070 22077 24420 24530 24753 29436 33004 36630 36795 40140 41255 44154 49060 49506 49729 73260 73590 74259 82510 88308 90761 99012 99458 110385 123765 147180 148518 149187 165020 181522 198916 220770 247530 248645 272283 297036 298374 363044 371295 441540 447561 453805 495060 497290 544566 547019 596748 742590 745935 816849 895122 907610 994580 1089132 1094038 1361415 1485180 1491870 1633698 1641057 1790244 1815220 1839973 2188076 2237805 2722830 2735095 2983740 3267396 3282114 3679946 4084245 4475610 4923171 5445660 5470190 5519919 6564228 7359892 8168490 8205285 8951220 9199865 9846342 10940380 11039838 11089567 16336980 16410570 16559757 18399730 19692684 20239703 22079676 22179134 24615855 27599595 32821140 33119514 33268701 36799460 40479406 44358268 49231710 55199190 55447835 60719109 66239028 66537402 80958812 82798785 98463420 99806103 101198515 110398380 110895670 121438218 121985237 133074804 165597570 166343505 182157327 199612206 202397030 221791340 242876436 243970474 303595545 331195140 332687010 364314654 365955711 399224412 404794060 410313979 487940948 499030515 607191090 609926185 665374020 728629308 731911422 820627958 910786635 998061030 1097867133 1214382180 1219852370 1230941937 1463822844 1641255916 1821573270 1829778555 1996122060 2051569895 2195734266 2439704740 2461883874 3643146540 3659557110 3692825811 4103139790 4391468532 4513453769 4923767748 5489335665 6154709685 7319114220 7385651622 8206279580 9026907538 10978671330 12309419370 13540361307 14771303244 18053815076 18464129055 21957342660 22567268845 24618838740 27080722614 36928258110 40621083921 45134537690 54161445228 67701806535 73856516220 81242167842 90269075380 135403613070 162484335684 203105419605 270807226140 406210839210 812421678420
• Sum of all divisors σ(n): 2773473131520
• Sum of proper divisors (its aliquot sum) s(n): 1961051453100
• 812421678420 is an abundant number, because the sum of its proper divisors (1961051453100) is greater than itself. Its abundance is 1148629774680

Bases of 812421678420

• Binary: 1011110100101000000110110000010101010100₂
• Hexadecimal: 0xBD281B0554
• Base-36: AD7YW310

Squares and roots of 812421678420

• 812421678420 squared (812421678420²) is 660028983566769893696400
• 812421678420 cubed (812421678420³) is 536221854635161795174754265911688000
• The square root of 812421678420 is 901344.3728231735
• The cube root of 812421678420 is 9330.9780504379

Scales and comparisons

• 812,421,678,420 seconds is equal to 25,832 years, 25 weeks, 5 days, 16 hours, 27 minutes.
• To count from 1 to 812,421,678,420 would take you about fifty-one thousand, six hundred sixty-four 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 812421678420 cubic inches would be around 777.6 feet tall.

Recreational maths with 812421678420

• 812421678420 backwards is 024876124218
• 812421678420 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 812421678420's digits is 45
• More coming soon!