13021681

Names of 13021681

• Cardinal: 13021681 can be written as Thirteen million, twenty-one thousand, six hundred eighty-one.

Scientific notation

• Scientific notation: 1.3021681 × 10⁷

Factors of 13021681

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 13021681

Divisors of 13021681

• Number of divisors d(n): 2
• Complete list of divisors:
  1 13021681
• Sum of all divisors σ(n): 13021682
• Sum of proper divisors (its aliquot sum) s(n): 1
• 13021681 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 13021680

Bases of 13021681

• Binary: 110001101011000111110001₂
• Hexadecimal: 0xC6B1F1
• Base-36: 7R3LD

Squares and roots of 13021681

• 13021681 squared (13021681²) is 169564176065761
• 13021681 cubed (13021681³) is 2208010609756174764241
• The square root of 13021681 is 3608.5566366623
• The cube root of 13021681 is 235.2641122927

Scales and comparisons

• 13,021,681 seconds is equal to 21 weeks, 3 days, 17 hours, 8 minutes, 1 second.
• To count from 1 to 13,021,681 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 13021681 cubic inches would be around 19.6 feet tall.

Recreational maths with 13021681

• 13021681 backwards is 18612031
• The number of decimal digits it has is: 8
• The sum of 13021681's digits is 22
• More coming soon!