138658462840

Names of 138658462840

• Cardinal: 138658462840 can be written as One hundred thirty-eight billion, six hundred fifty-eight million, four hundred sixty-two thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.3865846284 × 10¹¹

Factors of 138658462840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 880648

Divisors of 138658462840

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 5 8 10 20 31 40 62 124 127 155 248 254 310 508 620 635 1016 1240 1270 2540 3937 5080 7874 15748 19685 31496 39370 78740 157480 880483 1760966 3521932 4402415 7043864 8804830 17609660 27294973 35219320 54589946 109179892 111821341 136474865 218359784 223642682 272949730 447285364 545899460 559106705 894570728 1091798920 1118213410 2236426820 3466461571 4472853640 6932923142 13865846284 17332307855 27731692568 34664615710 69329231420 138658462840
• Sum of all divisors σ(n): 324581621760
• Sum of proper divisors (its aliquot sum) s(n): 185923158920
• 138658462840 is an abundant number, because the sum of its proper divisors (185923158920) is greater than itself. Its abundance is 47264696080

Bases of 138658462840

• Binary: 10000001001000101100000011110001111000₂
• Hexadecimal: 0x2048B03C78
• Base-36: 1RP5O2NS

Squares and roots of 138658462840

• 138658462840 squared (138658462840²) is 19226169317151660865600
• 138658462840 cubed (138658462840³) is 2665871083817821742777079834304000
• The square root of 138658462840 is 372368.7189332637
• The cube root of 138658462840 is 5175.8553087293

Scales and comparisons

• 138,658,462,840 seconds is equal to 4,408 years, 47 weeks, 2 days, 7 hours, 40 minutes, 40 seconds.
• To count from 1 to 138,658,462,840 would take you about eight thousand, eight hundred seventeen 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 138658462840 cubic inches would be around 431.3 feet tall.

Recreational maths with 138658462840

• 138658462840 backwards is 048264856831
• The number of decimal digits it has is: 12
• The sum of 138658462840's digits is 55
• More coming soon!