139405128

Names of 139405128

• Cardinal: 139405128 can be written as One hundred thirty-nine million, four hundred five thousand, one hundred twenty-eight.

Scientific notation

• Scientific notation: 1.39405128 × 10⁸

Factors of 139405128

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1318

Divisors of 139405128

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 4 6 8 12 19 24 38 57 76 114 152 228 311 456 622 933 983 1244 1866 1966 2488 2949 3732 3932 5898 5909 7464 7864 11796 11818 17727 18677 23592 23636 35454 37354 47272 56031 70908 74708 112062 141816 149416 224124 305713 448248 611426 917139 1222852 1834278 2445704 3668556 5808547 7337112 11617094 17425641 23234188 34851282 46468376 69702564 139405128
• Sum of all divisors σ(n): 368409600
• Sum of proper divisors (its aliquot sum) s(n): 229004472
• 139405128 is an abundant number, because the sum of its proper divisors (229004472) is greater than itself. Its abundance is 89599344

Bases of 139405128

• Binary: 1000010011110010011101001000₂
• Hexadecimal: 0x84F2748
• Base-36: 2AZXOO

Squares and roots of 139405128

• 139405128 squared (139405128²) is 19433789712696384
• 139405128 cubed (139405128³) is 2709169942423522636657152
• The square root of 139405128 is 11806.9948759199
• The cube root of 139405128 is 518.5129209791

Scales and comparisons

• 139,405,128 seconds is equal to 4 years, 22 weeks, 3 days, 11 hours, 38 minutes, 48 seconds.
• To count from 1 to 139,405,128 would take you about 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 139405128 cubic inches would be around 43.2 feet tall.

Recreational maths with 139405128

• 139405128 backwards is 821504931
• The number of decimal digits it has is: 9
• The sum of 139405128's digits is 33
• More coming soon!