138865538529420

Names of 138865538529420

• Cardinal: 138865538529420 can be written as One hundred thirty-eight trillion, eight hundred sixty-five billion, five hundred thirty-eight million, five hundred twenty-nine thousand, four hundred twenty.

Scientific notation

• Scientific notation: 1.3886553852942 × 10¹⁴

Factors of 138865538529420

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 981013

Divisors of 138865538529420

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 10 12 15 19 20 30 38 57 60 76 95 114 190 228 285 380 570 1140 145861 291722 437583 583444 729305 835123 875166 1458610 1670246 1750332 2187915 2505369 2771359 2917220 3340492 4175615 4375830 5010738 5542718 8314077 8351230 8751660 10021476 11085436 12526845 13856795 15867337 16628154 16702460 25053690 27713590 31734674 33256308 41570385 47602011 50107380 55427180 63469348 79336685 83140770 95204022 158673370 166281540 190408044 238010055 317346740 476020110 952040220 121811875903 243623751806 365435627709 487247503612 609059379515 730871255418 1218118759030 1461742510836 1827178138545 2314425642157 2436237518060 3654356277090 4628851284314 6943276926471 7308712554180 9257702568628 11572128210785 13886553852942 23144256421570 27773107705884 34716384632355 46288512843140 69432769264710 138865538529420
• Sum of all divisors σ(n): 409291199143680
• Sum of proper divisors (its aliquot sum) s(n): 270425660614260
• 138865538529420 is an abundant number, because the sum of its proper divisors (270425660614260) is greater than itself. Its abundance is 131560122084840

Bases of 138865538529420

• Binary: 11111100100110000100111000110000111100010001100₂
• Hexadecimal: 0x7E4C2718788C
• Base-36: 1D81Y48L1O

Squares and roots of 138865538529420

• 138865538529420 squared (138865538529420²) is 19283637791065830536205536400
• 138865538529420 cubed (138865538529420³) is 2677832746662631670173082293242518280888000
• The square root of 138865538529420 is 11784122.3062822967
• The cube root of 138865538529420 is 51784.3060700687

Scales and comparisons

• 138,865,538,529,420 seconds is equal to 4,415,494 years, 30 weeks, 3 days, 6 hours, 37 minutes.
• To count from 1 to 138,865,538,529,420 would take you about eleven million, thirty-eight thousand, seven hundred thirty-six 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 138865538529420 cubic inches would be around 4315.4 feet tall.

Recreational maths with 138865538529420

• 138865538529420 backwards is 024925835568831
• The number of decimal digits it has is: 15
• The sum of 138865538529420's digits is 69
• More coming soon!