20513

Names of 20513

• Cardinal: 20513 can be written as Twenty thousand, five hundred thirteen.

Scientific notation

• Scientific notation: 2.0513 × 10⁴

Factors of 20513

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 354

Divisors of 20513

• Number of divisors d(n): 4
• Complete list of divisors:
  1 73 281 20513
• Sum of all divisors σ(n): 20868
• Sum of proper divisors (its aliquot sum) s(n): 355
• 20513 is a deficient number, because the sum of its proper divisors (355) is less than itself. Its deficiency is 20158

Bases of 20513

• Binary: 101000000100001₂
• Hexadecimal: 0x5021
• Base-36: FTT

Squares and roots of 20513

• 20513 squared (20513²) is 420783169
• 20513 cubed (20513³) is 8631525145697
• The square root of 20513 is 143.2236014071
• The cube root of 20513 is 27.3743023667

Scales and comparisons

• 20,513 seconds is equal to 5 hours, 41 minutes, 53 seconds.
• To count from 1 to 20,513 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 20513 cubic inches would be around 2.3 feet tall.

Recreational maths with 20513

• 20513 backwards is 31502
• The number of decimal digits it has is: 5
• The sum of 20513's digits is 11
• More coming soon!