13021729

Names of 13021729

• Cardinal: 13021729 can be written as Thirteen million, twenty-one thousand, seven hundred twenty-nine.

Scientific notation

• Scientific notation: 1.3021729 × 10⁷

Factors of 13021729

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 35159

Divisors of 13021729

• Number of divisors d(n): 8
• Complete list of divisors:
  1 7 53 371 35099 245693 1860247 13021729
• Sum of all divisors σ(n): 15163200
• Sum of proper divisors (its aliquot sum) s(n): 2141471
• 13021729 is a deficient number, because the sum of its proper divisors (2141471) is less than itself. Its deficiency is 10880258

Bases of 13021729

• Binary: 110001101011001000100001₂
• Hexadecimal: 0xC6B221
• Base-36: 7R3MP

Squares and roots of 13021729

• 13021729 squared (13021729²) is 169565426149441
• 13021729 cubed (13021729³) is 2208035027087534203489
• The square root of 13021729 is 3608.5632875149
• The cube root of 13021729 is 235.2644013661

Scales and comparisons

• 13,021,729 seconds is equal to 21 weeks, 3 days, 17 hours, 8 minutes, 49 seconds.
• To count from 1 to 13,021,729 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 13021729 cubic inches would be around 19.6 feet tall.

Recreational maths with 13021729

• 13021729 backwards is 92712031
• The number of decimal digits it has is: 8
• The sum of 13021729's digits is 25
• More coming soon!