138072639

Names of 138072639

• Cardinal: 138072639 can be written as One hundred thirty-eight million, seventy-two thousand, six hundred thirty-nine.

Scientific notation

• Scientific notation: 1.38072639 × 10⁸

Factors of 138072639

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 2422349

Divisors of 138072639

• Number of divisors d(n): 8
• Complete list of divisors:
  1 3 19 57 2422327 7266981 46024213 138072639
• Sum of all divisors σ(n): 193786240
• Sum of proper divisors (its aliquot sum) s(n): 55713601
• 138072639 is a deficient number, because the sum of its proper divisors (55713601) is less than itself. Its deficiency is 82359038

Bases of 138072639

• Binary: 1000001110101101001000111111₂
• Hexadecimal: 0x83AD23F
• Base-36: 2A7DJ3

Squares and roots of 138072639

• 138072639 squared (138072639²) is 19064053640424321
• 138072639 cubed (138072639³) is 2632224196170943080253119
• The square root of 138072639 is 11750.4314388877
• The cube root of 138072639 is 516.8555791087

Scales and comparisons

• 138,072,639 seconds is equal to 4 years, 20 weeks, 2 days, 1 hour, 30 minutes, 39 seconds.
• To count from 1 to 138,072,639 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 138072639 cubic inches would be around 43.1 feet tall.

Recreational maths with 138072639

• 138072639 backwards is 936270831
• The number of decimal digits it has is: 9
• The sum of 138072639's digits is 39
• More coming soon!