13931387

Names of 13931387

• Cardinal: 13931387 can be written as Thirteen million, nine hundred thirty-one thousand, three hundred eighty-seven.

Scientific notation

• Scientific notation: 1.3931387 × 10⁷

Factors of 13931387

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 13068

Divisors of 13931387

• Number of divisors d(n): 4
• Complete list of divisors:
  1 1171 11897 13931387
• Sum of all divisors σ(n): 13944456
• Sum of proper divisors (its aliquot sum) s(n): 13069
• 13931387 is a deficient number, because the sum of its proper divisors (13069) is less than itself. Its deficiency is 13918318

Bases of 13931387

• Binary: 110101001001001101111011₂
• Hexadecimal: 0xD4937B
• Base-36: 8ALIZ

Squares and roots of 13931387

• 13931387 squared (13931387²) is 194083543743769
• 13931387 cubed (13931387³) is 2703852958225874777603
• The square root of 13931387 is 3732.4773274597
• The cube root of 13931387 is 240.6198502749

Scales and comparisons

• 13,931,387 seconds is equal to 23 weeks, 5 hours, 49 minutes, 47 seconds.
• To count from 1 to 13,931,387 would take you about thirty-four 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 13931387 cubic inches would be around 20.1 feet tall.

Recreational maths with 13931387

• 13931387 backwards is 78313931
• The number of decimal digits it has is: 8
• The sum of 13931387's digits is 35
• More coming soon!