138808

Names of 138808

• Cardinal: 138808 can be written as One hundred thirty-eight thousand, eight hundred eight.

Scientific notation

• Scientific notation: 1.38808 × 10⁵

Factors of 138808

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 17353

Divisors of 138808

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 4 8 17351 34702 69404 138808
• Sum of all divisors σ(n): 260280
• Sum of proper divisors (its aliquot sum) s(n): 121472
• 138808 is a deficient number, because the sum of its proper divisors (121472) is less than itself. Its deficiency is 17336

Bases of 138808

• Binary: 100001111000111000₂
• Hexadecimal: 0x21E38
• Base-36: 2Z3S

Squares and roots of 138808

• 138808 squared (138808²) is 19267660864
• 138808 cubed (138808³) is 2674505469210112
• The square root of 138808 is 372.5694566117
• The cube root of 138808 is 51.7771528567

Scales and comparisons

• 138,808 seconds is equal to 1 day, 14 hours, 33 minutes, 28 seconds.
• To count from 1 to 138,808 would take you about fourteen hours.

  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 138808 cubic inches would be around 4.3 feet tall.

Recreational maths with 138808

• 138808 backwards is 808831
• The number of decimal digits it has is: 6
• The sum of 138808's digits is 28
• More coming soon!