81828909072

Names of 81828909072

• Cardinal: 81828909072 can be written as Eighty-one billion, eight hundred twenty-eight million, nine hundred nine thousand and seventy-two.

Scientific notation

• Scientific notation: 8.1828909072 × 10¹⁰

Factors of 81828909072

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 37354

Divisors of 81828909072

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 19 24 27 36 38 48 54 57 72 76 108 114 144 152 171 216 228 269 304 342 432 456 513 538 684 807 912 1026 1076 1368 1614 2052 2152 2421 2736 3228 4104 4304 4842 5111 6456 7263 8208 9684 10222 12912 14526 15333 19368 20444 29052 30666 37061 38736 40888 45999 58104 61332 74122 81776 91998 111183 116208 122664 137997 148244 183996 222366 245328 275994 296488 333549 367992 444732 551988 592976 667098 704159 735984 889464 1000647 1103976 1334196 1408318 1778928 2001294 2112477 2207952 2668392 2816636 4002588 4224954 5336784 5633272 6337431 8005176 8449908 9969409 11266544 12674862 16010352 16899816 19012293 19938818 25349724 29908227 33799632 38024586 39877636 50699448 59816454 76049172 79755272 89724681 101398896 119632908 152098344 159510544 179449362 189418771 239265816 269174043 304196688 358898724 378837542 478531632 538348086 568256313 717797448 757675084 1076696172 1136512626 1435594896 1515350168 1704768939 2153392344 2273025252 3030700336 3409537878 4306784688 4546050504 5114306817 6819075756 9092101008 10228613634 13638151512 20457227268 27276303024 40914454536 81828909072
• Sum of all divisors σ(n): 248167152000
• Sum of proper divisors (its aliquot sum) s(n): 166338242928
• 81828909072 is an abundant number, because the sum of its proper divisors (166338242928) is greater than itself. Its abundance is 84509333856

Bases of 81828909072

• Binary: 1001100001101011000100001000000010000₂
• Hexadecimal: 0x130D621010
• Base-36: 11LATIC0

Squares and roots of 81828909072

• 81828909072 squared (81828909072²) is 6695970359913643901184
• 81828909072 cubed (81828909072³) is 547923949730180680562172889141248
• The square root of 81828909072 is 286057.5275569583
• The cube root of 81828909072 is 4341.4578315857

Scales and comparisons

• 81,828,909,072 seconds is equal to 2,601 years, 47 weeks, 20 hours, 31 minutes, 12 seconds.
• To count from 1 to 81,828,909,072 would take you about five thousand, two hundred three 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 81828909072 cubic inches would be around 361.8 feet tall.

Recreational maths with 81828909072

• 81828909072 backwards is 27090982818
• 81828909072 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81828909072's digits is 54
• More coming soon!