139116978

Names of 139116978

• Cardinal: 139116978 can be written as One hundred thirty-nine million, one hundred sixteen thousand, nine hundred seventy-eight.

Scientific notation

• Scientific notation: 1.39116978 × 10⁸

Factors of 139116978

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1139

Divisors of 139116978

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 6 7 9 11 13 14 18 21 22 26 33 39 42 49 63 66 77 78 91 98 99 117 126 143 147 154 182 198 231 234 273 286 294 429 441 462 539 546 637 693 819 858 882 1001 1078 1103 1274 1287 1386 1617 1638 1911 2002 2206 2574 3003 3234 3309 3822 4851 5733 6006 6618 7007 7721 9009 9702 9927 11466 12133 14014 14339 15442 18018 19854 21021 23163 24266 28678 36399 42042 43017 46326 54047 63063 69489 72798 84931 86034 100373 108094 109197 126126 129051 138978 157729 162141 169862 200746 218394 254793 258102 301119 315458 324282 473187 486423 509586 594517 602238 702611 764379 903357 946374 972846 1104103 1189034 1405222 1419561 1528758 1783551 1806714 2107833 2208206 2839122 3312309 3567102 4215666 5350653 6323499 6624618 7728721 9936927 10701306 12646998 15457442 19873854 23186163 46372326 69558489 139116978
• Sum of all divisors σ(n): 412304256
• Sum of proper divisors (its aliquot sum) s(n): 273187278
• 139116978 is an abundant number, because the sum of its proper divisors (273187278) is greater than itself. Its abundance is 134070300

Bases of 139116978

• Binary: 1000010010101100000110110010₂
• Hexadecimal: 0x84AC1B2
• Base-36: 2ATRCI

Squares and roots of 139116978

• 139116978 squared (139116978²) is 19353533567852484
• 139116978 cubed (139116978³) is 2692405103581195523873352
• The square root of 139116978 is 11794.7860514721
• The cube root of 139116978 is 518.1554196407

Scales and comparisons

• 139,116,978 seconds is equal to 4 years, 22 weeks, 3 hours, 36 minutes, 18 seconds.
• To count from 1 to 139,116,978 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 139116978 cubic inches would be around 43.2 feet tall.

Recreational maths with 139116978

• 139116978 backwards is 879611931
• The number of decimal digits it has is: 9
• The sum of 139116978's digits is 45
• More coming soon!