81490478328

Names of 81490478328

• Cardinal: 81490478328 can be written as Eighty-one billion, four hundred ninety million, four hundred seventy-eight thousand, three hundred twenty-eight.

Scientific notation

• Scientific notation: 8.1490478328 × 10¹⁰

Factors of 81490478328

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 2279

Divisors of 81490478328

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 18 21 24 27 28 36 42 54 56 63 72 81 84 89 97 108 126 162 168 178 189 194 216 252 267 291 324 356 378 388 504 534 567 582 623 648 679 712 756 776 801 873 1068 1134 1164 1246 1358 1512 1602 1746 1869 2037 2081 2136 2268 2328 2403 2492 2619 2716 3204 3492 3738 4074 4162 4536 4806 4984 5238 5432 5607 6111 6243 6408 6984 7209 7476 7857 8148 8324 8633 9612 10476 11214 12222 12486 14418 14567 14952 15714 16296 16648 16821 17266 18333 18729 19224 20952 22428 24444 24972 25899 28836 29134 31428 33642 34532 36666 37458 43701 44856 48888 49944 50463 51798 54999 56187 57672 58268 60431 62856 67284 69064 73332 74916 77697 87402 100926 103596 109998 112374 116536 120862 131103 134568 146664 149832 155394 168561 174804 181293 185209 201852 201857 207192 219996 224748 233091 241724 262206 310788 337122 349608 362586 370418 393309 403704 403714 439992 449496 466182 483448 524412 543879 555627 605571 621576 674244 699273 725172 740836 786618 807428 932364 1048824 1087758 1111254 1179927 1211142 1296463 1348488 1398546 1412999 1450344 1481672 1573236 1614856 1631637 1666881 1816713 1864728 2175516 2222508 2359854 2422284 2592926 2797092 2825998 3146472 3263274 3333762 3633426 3889389 4238997 4351032 4445016 4719708 4844568 4894911 5000643 5185852 5450139 5594184 5651996 6526548 6667524 7266852 7778778 8477994 9439416 9789822 10001286 10371704 10900278 11303992 11668167 12716991 13053096 13335048 14533704 15001929 15557556 16350417 16955988 17965273 19579644 20002572 21800556 23336334 25433982 30003858 31115112 32700834 33911976 35004501 35930546 38150973 39159288 40005144 43601112 46672668 50867964 53895819 60007716 65401668 70009002 71861092 76301946 93345336 101735928 105013503 107791638 114452919 120015432 125756911 130803336 140018004 143722184 152603892 161687457 210027006 215583276 228905838 251513822 280036008 305207784 323374914 377270733 420054012 431166552 457811676 485062371 503027644 646749828 754541466 840108024 915623352 970124742 1006055288 1131812199 1293499656 1455187113 1509082932 1940249484 2263624398 2910374226 3018165864 3395436597 3880498968 4527248796 5820748452 6790873194 9054497592 10186309791 11641496904 13581746388 20372619582 27163492776 40745239164 81490478328
• Sum of all divisors σ(n): 266634244800
• Sum of proper divisors (its aliquot sum) s(n): 185143766472
• 81490478328 is an abundant number, because the sum of its proper divisors (185143766472) is greater than itself. Its abundance is 103653288144

Bases of 81490478328

• Binary: 1001011111001001101100000010011111000₂
• Hexadecimal: 0x12F93604F8
• Base-36: 11FPBRI0

Squares and roots of 81490478328

• 81490478328 squared (81490478328²) is 6640698058126237675584
• 81490478328 cubed (81490478328³) is 541153661188527855590355046743552
• The square root of 81490478328 is 285465.3715041459
• The cube root of 81490478328 is 4335.4643790787

Scales and comparisons

• 81,490,478,328 seconds is equal to 2,591 years, 7 weeks, 3 days, 19 hours, 58 minutes, 48 seconds.
• To count from 1 to 81,490,478,328 would take you about five thousand, one hundred eighty-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 81490478328 cubic inches would be around 361.3 feet tall.

Recreational maths with 81490478328

• 81490478328 backwards is 82387409418
• 81490478328 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81490478328's digits is 54
• More coming soon!