13129681

Names of 13129681

• Cardinal: 13129681 can be written as Thirteen million, one hundred twenty-nine thousand, six hundred eighty-one.

Scientific notation

• Scientific notation: 1.3129681 × 10⁷

Factors of 13129681

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 13129681

Divisors of 13129681

• Number of divisors d(n): 2
• Complete list of divisors:
  1 13129681
• Sum of all divisors σ(n): 13129682
• Sum of proper divisors (its aliquot sum) s(n): 1
• 13129681 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 13129680

Bases of 13129681

• Binary: 110010000101011111010001₂
• Hexadecimal: 0xC857D1
• Base-36: 7TEXD

Squares and roots of 13129681

• 13129681 squared (13129681²) is 172388523161761
• 13129681 cubed (13129681³) is 2263406317175033328241
• The square root of 13129681 is 3623.4901683321
• The cube root of 13129681 is 235.9127382549

Scales and comparisons

• 13,129,681 seconds is equal to 21 weeks, 4 days, 23 hours, 8 minutes, 1 second.
• To count from 1 to 13,129,681 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 13129681 cubic inches would be around 19.7 feet tall.

Recreational maths with 13129681

• 13129681 backwards is 18692131
• The number of decimal digits it has is: 8
• The sum of 13129681's digits is 31
• More coming soon!