138661

Names of 138661

• Cardinal: 138661 can be written as One hundred thirty-eight thousand, six hundred sixty-one.

Scientific notation

• Scientific notation: 1.38661 × 10⁵

Factors of 138661

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 138661

Divisors of 138661

• Number of divisors d(n): 2
• Complete list of divisors:
  1 138661
• Sum of all divisors σ(n): 138662
• Sum of proper divisors (its aliquot sum) s(n): 1
• 138661 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 138660

Bases of 138661

• Binary: 100001110110100101₂
• Hexadecimal: 0x21DA5
• Base-36: 2YZP

Squares and roots of 138661

• 138661 squared (138661²) is 19226872921
• 138661 cubed (138661³) is 2666017426098781
• The square root of 138661 is 372.3721257023
• The cube root of 138661 is 51.7588687765

Scales and comparisons

• 138,661 seconds is equal to 1 day, 14 hours, 31 minutes, 1 second.
• To count from 1 to 138,661 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 138661 cubic inches would be around 4.3 feet tall.

Recreational maths with 138661

• 138661 backwards is 166831
• The number of decimal digits it has is: 6
• The sum of 138661's digits is 25
• More coming soon!