138231808

Names of 138231808

• Cardinal: 138231808 can be written as One hundred thirty-eight million, two hundred thirty-one thousand, eight hundred eight.

Scientific notation

• Scientific notation: 1.38231808 × 10⁸

Factors of 138231808

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 85

Divisors of 138231808

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 4 8 11 13 16 22 26 32 44 52 59 64 88 104 118 128 143 176 208 236 256 286 352 416 472 512 572 649 704 767 832 944 1024 1144 1298 1408 1534 1664 1888 2048 2288 2596 2816 3068 3328 3776 4096 4576 5192 5632 6136 6656 7552 8192 8437 9152 10384 11264 12272 13312 15104 16384 16874 18304 20768 22528 24544 26624 30208 33748 36608 41536 45056 49088 53248 60416 67496 73216 83072 90112 98176 106496 120832 134992 146432 166144 180224 196352 212992 241664 269984 292864 332288 392704 483328 539968 585728 664576 785408 966656 1079936 1171456 1329152 1570816 2159872 2342912 2658304 3141632 4319744 5316608 6283264 8639488 10633216 12566528 17278976 34557952 69115904 138231808
• Sum of all divisors σ(n): 330291360
• Sum of proper divisors (its aliquot sum) s(n): 192059552
• 138231808 is an abundant number, because the sum of its proper divisors (192059552) is greater than itself. Its abundance is 53827744

Bases of 138231808

• Binary: 1000001111010100000000000000₂
• Hexadecimal: 0x83D4000
• Base-36: 2AASCG

Squares and roots of 138231808

• 138231808 squared (138231808²) is 19108032742948864
• 138231808 cubed (138231808³) is 2641337913381020722266112
• The square root of 138231808 is 11757.2023883237
• The cube root of 138231808 is 517.0541117895

Scales and comparisons

• 138,231,808 seconds is equal to 4 years, 20 weeks, 3 days, 21 hours, 43 minutes, 28 seconds.
• To count from 1 to 138,231,808 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 138231808 cubic inches would be around 43.1 feet tall.

Recreational maths with 138231808

• 138231808 backwards is 808132831
• The number of decimal digits it has is: 9
• The sum of 138231808's digits is 34
• More coming soon!