138664560

Names of 138664560

• Cardinal: 138664560 can be written as One hundred thirty-eight million, six hundred sixty-four thousand, five hundred sixty.

Scientific notation

• Scientific notation: 1.3866456 × 10⁸

Factors of 138664560

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 5236

Divisors of 138664560

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 113 120 226 240 339 452 565 678 904 1130 1356 1695 1808 2260 2712 3390 4520 5113 5424 6780 9040 10226 13560 15339 20452 25565 27120 30678 40904 51130 61356 76695 81808 102260 122712 153390 204520 245424 306780 409040 577769 613560 1155538 1227120 1733307 2311076 2888845 3466614 4622152 5777690 6933228 8666535 9244304 11555380 13866456 17333070 23110760 27732912 34666140 46221520 69332280 138664560
• Sum of all divisors σ(n): 433749024
• Sum of proper divisors (its aliquot sum) s(n): 295084464
• 138664560 is an abundant number, because the sum of its proper divisors (295084464) is greater than itself. Its abundance is 156419904

Bases of 138664560

• Binary: 1000010000111101101001110000₂
• Hexadecimal: 0x843DA70
• Base-36: 2AK29C

Squares and roots of 138664560

• 138664560 squared (138664560²) is 19227860199993600
• 138664560 cubed (138664560³) is 2666222774373624546816000
• The square root of 138664560 is 11775.5917048783
• The cube root of 138664560 is 517.5931172727

Scales and comparisons

• 138,664,560 seconds is equal to 4 years, 21 weeks, 1 day, 21 hours, 56 minutes.
• To count from 1 to 138,664,560 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 138664560 cubic inches would be around 43.1 feet tall.

Recreational maths with 138664560

• 138664560 backwards is 065466831
• The number of decimal digits it has is: 9
• The sum of 138664560's digits is 39
• More coming soon!