13921

Names of 13921

• Cardinal: 13921 can be written as Thirteen thousand, nine hundred twenty-one.

Scientific notation

• Scientific notation: 1.3921 × 10⁴

Factors of 13921

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 13921

Divisors of 13921

• Number of divisors d(n): 2
• Complete list of divisors:
  1 13921
• Sum of all divisors σ(n): 13922
• Sum of proper divisors (its aliquot sum) s(n): 1
• 13921 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 13920

Bases of 13921

• Binary: 11011001100001₂
• Hexadecimal: 0x3661
• Base-36: AQP

Squares and roots of 13921

• 13921 squared (13921²) is 193794241
• 13921 cubed (13921³) is 2697809628961
• The square root of 13921 is 117.9872874509
• The cube root of 13921 is 24.0560034747

Scales and comparisons

• 13,921 seconds is equal to 3 hours, 52 minutes, 1 second.
• To count from 1 to 13,921 would take you about three hours.

  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 13921 cubic inches would be around 2 feet tall.

Recreational maths with 13921

• 13921 backwards is 12931
• The number of decimal digits it has is: 5
• The sum of 13921's digits is 16
• More coming soon!