138128975816

Names of 138128975816

• Cardinal: 138128975816 can be written as One hundred thirty-eight billion, one hundred twenty-eight million, nine hundred seventy-five thousand, eight hundred sixteen.

Scientific notation

• Scientific notation: 1.38128975816 × 10¹¹

Factors of 138128975816

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 5102

Divisors of 138128975816

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 8 13 26 52 104 313 626 1181 1252 2362 2504 3593 4069 4724 7186 8138 9448 14372 15353 16276 28744 30706 32552 46709 61412 93418 122824 186836 369653 373672 739306 1124609 1478612 2249218 2957224 4243333 4498436 4805489 8486666 8996872 9610978 14619917 16973332 19221956 29239834 33946664 38443912 55163329 58479668 110326658 116959336 220653316 441306632 1328163229 2656326458 5312652916 10625305832 17266121977 34532243954 69064487908 138128975816
• Sum of all divisors σ(n): 280120241520
• Sum of proper divisors (its aliquot sum) s(n): 141991265704
• 138128975816 is an abundant number, because the sum of its proper divisors (141991265704) is greater than itself. Its abundance is 3862289888

Bases of 138128975816

• Binary: 10000000101001001000001110011111001000₂
• Hexadecimal: 0x202920E7C8
• Base-36: 1RGEFBUW

Squares and roots of 138128975816

• 138128975816 squared (138128975816²) is 19079613959977112865856
• 138128975816 cubed (138128975816³) is 2635447535256294614961325876138496
• The square root of 138128975816 is 371657.0674909869
• The cube root of 138128975816 is 5169.2586587593

Scales and comparisons

• 138,128,975,816 seconds is equal to 4,392 years, 3 weeks, 5 days, 23 hours, 56 minutes, 56 seconds.
• To count from 1 to 138,128,975,816 would take you about eight thousand, seven hundred eighty-four 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 138128975816 cubic inches would be around 430.8 feet tall.

Recreational maths with 138128975816

• 138128975816 backwards is 618579821831
• The number of decimal digits it has is: 12
• The sum of 138128975816's digits is 59
• More coming soon!