13929721

Names of 13929721

• Cardinal: 13929721 can be written as Thirteen million, nine hundred twenty-nine thousand, seven hundred twenty-one.

Scientific notation

• Scientific notation: 1.3929721 × 10⁷

Factors of 13929721

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 24975

Divisors of 13929721

• Number of divisors d(n): 8
• Complete list of divisors:
  1 13 43 559 24919 323947 1071517 13929721
• Sum of all divisors σ(n): 15350720
• Sum of proper divisors (its aliquot sum) s(n): 1420999
• 13929721 is a deficient number, because the sum of its proper divisors (1420999) is less than itself. Its deficiency is 12508722

Bases of 13929721

• Binary: 110101001000110011111001₂
• Hexadecimal: 0xD48CF9
• Base-36: 8AK8P

Squares and roots of 13929721

• 13929721 squared (13929721²) is 194037127137841
• 13929721 cubed (13929721³) is 2702883044671653672361
• The square root of 13929721 is 3732.2541446155
• The cube root of 13929721 is 240.6102582975

Scales and comparisons

• 13,929,721 seconds is equal to 23 weeks, 5 hours, 22 minutes, 1 second.
• To count from 1 to 13,929,721 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 13929721 cubic inches would be around 20.1 feet tall.

Recreational maths with 13929721

• 13929721 backwards is 12792931
• The number of decimal digits it has is: 8
• The sum of 13929721's digits is 34
• More coming soon!