129940428940

Names of 129940428940

• Cardinal: 129940428940 can be written as One hundred twenty-nine billion, nine hundred forty million, four hundred twenty-eight thousand, nine hundred forty.

Scientific notation

• Scientific notation: 1.2994042894 × 10¹¹

Factors of 129940428940

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 19653

Divisors of 129940428940

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 5 7 10 14 20 28 31 35 62 70 124 140 155 217 310 434 620 868 1085 1669 2170 3338 4340 6676 8345 11683 16690 17939 23366 33380 35878 46732 51739 58415 71756 89695 103478 116830 125573 179390 206956 233660 251146 258695 358780 362173 502292 517390 556109 627865 724346 1034780 1112218 1255730 1448692 1810865 2224436 2511460 2780545 3621730 3892763 5561090 7243460 7785526 11122180 15571052 19463815 29940191 38927630 59880382 77855260 119760764 149700955 209581337 299401910 419162674 598803820 838325348 928145921 1047906685 1856291842 2095813370 3712583684 4191626740 4640729605 6497021447 9281459210 12994042894 18562918420 25988085788 32485107235 64970214470 129940428940
• Sum of all divisors σ(n): 322127769600
• Sum of proper divisors (its aliquot sum) s(n): 192187340660
• 129940428940 is an abundant number, because the sum of its proper divisors (192187340660) is greater than itself. Its abundance is 62246911720

Bases of 129940428940

• Binary: 1111001000001000011011001100010001100₂
• Hexadecimal: 0x1E410D988C
• Base-36: 1NOZ6CNG

Squares and roots of 129940428940

• 129940428940 squared (129940428940²) is 16884515073111189523600
• 129940428940 cubed (129940428940³) is 2193981131043963427010218252984000
• The square root of 129940428940 is 360472.5078837497
• The cube root of 129940428940 is 5065.0231190883

Scales and comparisons

• 129,940,428,940 seconds is equal to 4,131 years, 36 weeks, 4 days, 3 hours, 35 minutes, 40 seconds.
• To count from 1 to 129,940,428,940 would take you about eight thousand, two hundred sixty-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 129940428940 cubic inches would be around 422.1 feet tall.

Recreational maths with 129940428940

• 129940428940 backwards is 049824049921
• The number of decimal digits it has is: 12
• The sum of 129940428940's digits is 52
• More coming soon!