81704928942

Names of 81704928942

• Cardinal: 81704928942 can be written as Eighty-one billion, seven hundred four million, nine hundred twenty-eight thousand, nine hundred forty-two.

Scientific notation

• Scientific notation: 8.1704928942 × 10¹⁰

Factors of 81704928942

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 201991

Divisors of 81704928942

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 6 7 9 13 14 18 19 21 26 38 39 42 57 63 78 91 114 117 126 133 169 171 182 234 247 266 273 338 342 399 494 507 546 741 798 819 1014 1183 1197 1482 1521 1638 1729 2223 2366 2394 3042 3211 3458 3549 4446 5187 6422 7098 9633 10374 10647 15561 19266 21294 22477 28899 31122 44954 57798 67431 134862 201947 202293 403894 404586 605841 1211682 1413629 1817523 2625311 2827258 3635046 3836993 4240887 5250622 7673986 7875933 8481774 11510979 12722661 15751866 18377177 23021958 23627799 25445322 26858951 34129043 34532937 36754354 47255598 49880909 53717902 55131531 68258086 69065874 80576853 99761818 102387129 110263062 149642727 161153706 165394593 204774258 238903301 241730559 299285454 307161387 330789186 349166363 448928181 477806602 483461118 614322774 648451817 698332726 716709903 897856362 1047499089 1296903634 1433419806 1945355451 2094998178 2150129709 3142497267 3890710902 4300259418 4539162719 5836066353 6284994534 9078325438 11672132706 13617488157 27234976314 40852464471 81704928942
• Sum of all divisors σ(n): 230608460160
• Sum of proper divisors (its aliquot sum) s(n): 148903531218
• 81704928942 is an abundant number, because the sum of its proper divisors (148903531218) is greater than itself. Its abundance is 67198602276

Bases of 81704928942

• Binary: 1001100000101111111100100011010101110₂
• Hexadecimal: 0x1305FE46AE
• Base-36: 11J906NI

Squares and roots of 81704928942

• 81704928942 squared (81704928942²) is 6675695413417269239364
• 81704928942 cubed (81704928942³) is 545437219391693296597918009272888
• The square root of 81704928942 is 285840.7405217107
• The cube root of 81704928942 is 4339.2641220501

Scales and comparisons

• 81,704,928,942 seconds is equal to 2,597 years, 50 weeks, 21 hours, 35 minutes, 42 seconds.
• To count from 1 to 81,704,928,942 would take you about five thousand, one hundred ninety-five 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 81704928942 cubic inches would be around 361.6 feet tall.

Recreational maths with 81704928942

• 81704928942 backwards is 24982940718
• The number of decimal digits it has is: 11
• The sum of 81704928942's digits is 54
• More coming soon!