138787071

Names of 138787071

• Cardinal: 138787071 can be written as One hundred thirty-eight million, seven hundred eighty-seven thousand and seventy-one.

Scientific notation

• Scientific notation: 1.38787071 × 10⁸

Factors of 138787071

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 16185

Divisors of 138787071

• Number of divisors d(n): 8
• Complete list of divisors:
  1 3 3709 11127 12473 37419 46262357 138787071
• Sum of all divisors σ(n): 185114160
• Sum of proper divisors (its aliquot sum) s(n): 46327089
• 138787071 is a deficient number, because the sum of its proper divisors (46327089) is less than itself. Its deficiency is 92459982

Bases of 138787071

• Binary: 1000010001011011100011111111₂
• Hexadecimal: 0x845B8FF
• Base-36: 2AMOSF

Squares and roots of 138787071

• 138787071 squared (138787071²) is 19261851076759041
• 138787071 cubed (138787071³) is 2673295892981583473158911
• The square root of 138787071 is 11780.7924606115
• The cube root of 138787071 is 517.7455046479

Scales and comparisons

• 138,787,071 seconds is equal to 4 years, 21 weeks, 3 days, 7 hours, 57 minutes, 51 seconds.
• To count from 1 to 138,787,071 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 138787071 cubic inches would be around 43.1 feet tall.

Recreational maths with 138787071

• 138787071 backwards is 170787831
• The number of decimal digits it has is: 9
• The sum of 138787071's digits is 42
• More coming soon!