138647190968

Names of 138647190968

• Cardinal: 138647190968 can be written as One hundred thirty-eight billion, six hundred forty-seven million, one hundred ninety thousand, nine hundred sixty-eight.

Scientific notation

• Scientific notation: 1.38647190968 × 10¹¹

Factors of 138647190968

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 47504

Divisors of 138647190968

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 8 11 13 22 26 44 52 88 104 143 286 572 1144 2707 5414 10828 21656 29777 35191 44771 59554 70382 89542 119108 140764 179084 238216 281528 358168 387101 492481 582023 774202 984962 1164046 1548404 1969924 2328092 3096808 3939848 4656184 6402253 12804506 25609012 51218024 121195097 242390194 484780388 969560776 1333146067 1575536261 2666292134 3151072522 5332584268 6302145044 10665168536 12604290088 17330898871 34661797742 69323595484 138647190968
• Sum of all divisors σ(n): 305531291520
• Sum of proper divisors (its aliquot sum) s(n): 166884100552
• 138647190968 is an abundant number, because the sum of its proper divisors (166884100552) is greater than itself. Its abundance is 28236909584

Bases of 138647190968

• Binary: 10000001001000000001000011110110111000₂
• Hexadecimal: 0x2048043DB8
• Base-36: 1ROYYH88

Squares and roots of 138647190968

• 138647190968 squared (138647190968²) is 19223043563317060777024
• 138647190968 cubed (138647190968³) is 2665220991909403725084508994719232
• The square root of 138647190968 is 372353.5832619313
• The cube root of 138647190968 is 5175.7150524519

Scales and comparisons

• 138,647,190,968 seconds is equal to 4,408 years, 28 weeks, 4 days, 20 hours, 36 minutes, 8 seconds.
• To count from 1 to 138,647,190,968 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 138647190968 cubic inches would be around 431.3 feet tall.

Recreational maths with 138647190968

• 138647190968 backwards is 869091746831
• The number of decimal digits it has is: 12
• The sum of 138647190968's digits is 62
• More coming soon!