138739

Names of 138739

• Cardinal: 138739 can be written as One hundred thirty-eight thousand, seven hundred thirty-nine.

Scientific notation

• Scientific notation: 1.38739 × 10⁵

Factors of 138739

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 138739

Divisors of 138739

• Number of divisors d(n): 2
• Complete list of divisors:
  1 138739
• Sum of all divisors σ(n): 138740
• Sum of proper divisors (its aliquot sum) s(n): 1
• 138739 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 138738

Bases of 138739

• Binary: 100001110111110011₂
• Hexadecimal: 0x21DF3
• Base-36: 2Z1V

Squares and roots of 138739

• 138739 squared (138739²) is 19248510121
• 138739 cubed (138739³) is 2670519045677419
• The square root of 138739 is 372.4768449179
• The cube root of 138739 is 51.7685721417

Scales and comparisons

• 138,739 seconds is equal to 1 day, 14 hours, 32 minutes, 19 seconds.
• To count from 1 to 138,739 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 138739 cubic inches would be around 4.3 feet tall.

Recreational maths with 138739

• 138739 backwards is 937831
• The number of decimal digits it has is: 6
• The sum of 138739's digits is 31
• More coming soon!