13220731

Names of 13220731

• Cardinal: 13220731 can be written as Thirteen million, two hundred twenty thousand, seven hundred thirty-one.

Scientific notation

• Scientific notation: 1.3220731 × 10⁷

Factors of 13220731

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 13220731

Divisors of 13220731

• Number of divisors d(n): 2
• Complete list of divisors:
  1 13220731
• Sum of all divisors σ(n): 13220732
• Sum of proper divisors (its aliquot sum) s(n): 1
• 13220731 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 13220730

Bases of 13220731

• Binary: 110010011011101101111011₂
• Hexadecimal: 0xC9BB7B
• Base-36: 7VD6J

Squares and roots of 13220731

• 13220731 squared (13220731²) is 174787728174361
• 13220731 cubed (13220731³) is 2310821536294347877891
• The square root of 13220731 is 3636.0323155879
• The cube root of 13220731 is 236.4568081711

Scales and comparisons

• 13,220,731 seconds is equal to 21 weeks, 6 days, 25 minutes, 31 seconds.
• To count from 1 to 13,220,731 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 13220731 cubic inches would be around 19.7 feet tall.

Recreational maths with 13220731

• 13220731 backwards is 13702231
• The number of decimal digits it has is: 8
• The sum of 13220731's digits is 19
• More coming soon!