138893238

Names of 138893238

• Cardinal: 138893238 can be written as One hundred thirty-eight million, eight hundred ninety-three thousand, two hundred thirty-eight.

Scientific notation

• Scientific notation: 1.38893238 × 10⁸

Factors of 138893238

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 778

Divisors of 138893238

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 6 9 11 18 22 27 29 33 54 58 66 87 99 121 174 198 242 261 297 319 363 522 594 638 726 733 783 957 1089 1466 1566 1914 2178 2199 2871 3267 3509 4398 5742 6534 6597 7018 8063 8613 10527 13194 16126 17226 19791 21054 21257 24189 31581 39582 42514 48378 63162 63771 72567 88693 94743 127542 145134 177386 189486 191313 217701 233827 266079 382626 435402 467654 532158 573939 701481 798237 1147878 1402962 1596474 2104443 2394711 2572097 4208886 4789422 5144194 6313329 7716291 12626658 15432582 23148873 46297746 69446619 138893238
• Sum of all divisors σ(n): 351439200
• Sum of proper divisors (its aliquot sum) s(n): 212545962
• 138893238 is an abundant number, because the sum of its proper divisors (212545962) is greater than itself. Its abundance is 73652724

Bases of 138893238

• Binary: 1000010001110101011110110110₂
• Hexadecimal: 0x84757B6
• Base-36: 2AOYPI

Squares and roots of 138893238

• 138893238 squared (138893238²) is 19291331562124644
• 138893238 cubed (138893238³) is 2679435505995089964757272
• The square root of 138893238 is 11785.2975354889
• The cube root of 138893238 is 517.8774897489

Scales and comparisons

• 138,893,238 seconds is equal to 4 years, 21 weeks, 4 days, 13 hours, 27 minutes, 18 seconds.
• To count from 1 to 138,893,238 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 138893238 cubic inches would be around 43.2 feet tall.

Recreational maths with 138893238

• 138893238 backwards is 832398831
• The number of decimal digits it has is: 9
• The sum of 138893238's digits is 45
• More coming soon!