13239139

Names of 13239139

• Cardinal: 13239139 can be written as Thirteen million, two hundred thirty-nine thousand, one hundred thirty-nine.

Scientific notation

• Scientific notation: 1.3239139 × 10⁷

Factors of 13239139

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 427100

Divisors of 13239139

• Number of divisors d(n): 4
• Complete list of divisors:
  1 31 427069 13239139
• Sum of all divisors σ(n): 13666240
• Sum of proper divisors (its aliquot sum) s(n): 427101
• 13239139 is a deficient number, because the sum of its proper divisors (427101) is less than itself. Its deficiency is 12812038

Bases of 13239139

• Binary: 110010100000001101100011₂
• Hexadecimal: 0xCA0363
• Base-36: 7VRDV

Squares and roots of 13239139

• 13239139 squared (13239139²) is 175274801461321
• 13239139 cubed (13239139³) is 2320487459743831842619
• The square root of 13239139 is 3638.5627657085
• The cube root of 13239139 is 236.5665015083

Scales and comparisons

• 13,239,139 seconds is equal to 21 weeks, 6 days, 5 hours, 32 minutes, 19 seconds.
• To count from 1 to 13,239,139 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 13239139 cubic inches would be around 19.7 feet tall.

Recreational maths with 13239139

• 13239139 backwards is 93193231
• 13239139 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 13239139's digits is 31
• More coming soon!