138668

Names of 138668

• Cardinal: 138668 can be written as One hundred thirty-eight thousand, six hundred sixty-eight.

Scientific notation

• Scientific notation: 1.38668 × 10⁵

Factors of 138668

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 34669

Divisors of 138668

• Number of divisors d(n): 6
• Complete list of divisors:
  1 2 4 34667 69334 138668
• Sum of all divisors σ(n): 242676
• Sum of proper divisors (its aliquot sum) s(n): 104008
• 138668 is a deficient number, because the sum of its proper divisors (104008) is less than itself. Its deficiency is 34660

Bases of 138668

• Binary: 100001110110101100₂
• Hexadecimal: 0x21DAC
• Base-36: 2YZW

Squares and roots of 138668

• 138668 squared (138668²) is 19228814224
• 138668 cubed (138668³) is 2666421210813632
• The square root of 138668 is 372.3815247833
• The cube root of 138668 is 51.7597397399

Scales and comparisons

• 138,668 seconds is equal to 1 day, 14 hours, 31 minutes, 8 seconds.
• To count from 1 to 138,668 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 138668 cubic inches would be around 4.3 feet tall.

Recreational maths with 138668

• 138668 backwards is 866831
• The number of decimal digits it has is: 6
• The sum of 138668's digits is 32
• More coming soon!