138166938

Names of 138166938

• Cardinal: 138166938 can be written as One hundred thirty-eight million, one hundred sixty-six thousand, nine hundred thirty-eight.

Scientific notation

• Scientific notation: 1.38166938 × 10⁸

Factors of 138166938

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 963

Divisors of 138166938

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 6 7 9 13 14 18 21 26 27 31 39 42 54 62 63 78 91 93 117 126 182 186 189 217 234 273 279 351 378 403 434 546 558 651 702 806 819 837 907 1209 1302 1638 1674 1814 1953 2418 2457 2721 2821 3627 3906 4914 5442 5642 5859 6349 7254 8163 8463 10881 11718 11791 12698 16326 16926 19047 21762 23582 24489 25389 28117 35373 38094 48978 50778 56234 57141 70746 76167 82537 84351 106119 114282 152334 165074 168702 171423 196819 212238 247611 253053 318357 342846 365521 393638 495222 506106 590457 636714 731042 742833 759159 1096563 1180914 1485666 1518318 1771371 2193126 2228499 2558647 3289689 3542742 4456998 5117294 5314113 6579378 7675941 9869067 10628226 15351882 19738134 23027823 46055646 69083469 138166938
• Sum of all divisors σ(n): 390512640
• Sum of proper divisors (its aliquot sum) s(n): 252345702
• 138166938 is an abundant number, because the sum of its proper divisors (252345702) is greater than itself. Its abundance is 114178764

Bases of 138166938

• Binary: 1000001111000100001010011010₂
• Hexadecimal: 0x83C429A
• Base-36: 2A9EAI

Squares and roots of 138166938

• 138166938 squared (138166938²) is 19090102756295844
• 138166938 cubed (138166938³) is 2637621043942756987605672
• The square root of 138166938 is 11754.4433300775
• The cube root of 138166938 is 516.9732173633

Scales and comparisons

• 138,166,938 seconds is equal to 4 years, 20 weeks, 3 days, 3 hours, 42 minutes, 18 seconds.
• To count from 1 to 138,166,938 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 138166938 cubic inches would be around 43.1 feet tall.

Recreational maths with 138166938

• 138166938 backwards is 839661831
• The number of decimal digits it has is: 9
• The sum of 138166938's digits is 45
• More coming soon!