13138666

Names of 13138666

• Cardinal: 13138666 can be written as Thirteen million, one hundred thirty-eight thousand, six hundred sixty-six.

Scientific notation

• Scientific notation: 1.3138666 × 10⁷

Factors of 13138666

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 6296

Divisors of 13138666

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 1321 2642 4973 9946 6569333 13138666
• Sum of all divisors σ(n): 19726884
• Sum of proper divisors (its aliquot sum) s(n): 6588218
• 13138666 is a deficient number, because the sum of its proper divisors (6588218) is less than itself. Its deficiency is 6550448

Bases of 13138666

• Binary: 110010000111101011101010₂
• Hexadecimal: 0xC87AEA
• Base-36: 7TLUY

Squares and roots of 13138666

• 13138666 squared (13138666²) is 172624544259556
• 13138666 cubed (13138666³) is 2268056230428523592296
• The square root of 13138666 is 3624.7297830321
• The cube root of 13138666 is 235.9665398315

Scales and comparisons

• 13,138,666 seconds is equal to 21 weeks, 5 days, 1 hour, 37 minutes, 46 seconds.
• To count from 1 to 13,138,666 would take you about thirty-two weeks!

  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 13138666 cubic inches would be around 19.7 feet tall.

Recreational maths with 13138666

• 13138666 backwards is 66683131
• The number of decimal digits it has is: 8
• The sum of 13138666's digits is 34
• More coming soon!