20621

Names of 20621

• Cardinal: 20621 can be written as Twenty thousand, six hundred twenty-one.

Scientific notation

• Scientific notation: 2.0621 × 10⁴

Factors of 20621

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 1230

Divisors of 20621

• Number of divisors d(n): 4
• Complete list of divisors:
  1 17 1213 20621
• Sum of all divisors σ(n): 21852
• Sum of proper divisors (its aliquot sum) s(n): 1231
• 20621 is a deficient number, because the sum of its proper divisors (1231) is less than itself. Its deficiency is 19390

Bases of 20621

• Binary: 101000010001101₂
• Hexadecimal: 0x508D
• Base-36: FWT

Squares and roots of 20621

• 20621 squared (20621²) is 425225641
• 20621 cubed (20621³) is 8768577943061
• The square root of 20621 is 143.6001392757
• The cube root of 20621 is 27.4222597807

Scales and comparisons

• 20,621 seconds is equal to 5 hours, 43 minutes, 41 seconds.
• To count from 1 to 20,621 would take you about five 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 20621 cubic inches would be around 2.3 feet tall.

Recreational maths with 20621

• 20621 backwards is 12602
• The number of decimal digits it has is: 5
• The sum of 20621's digits is 11
• More coming soon!