20518

Names of 20518

• Cardinal: 20518 can be written as Twenty thousand, five hundred eighteen.

Scientific notation

• Scientific notation: 2.0518 × 10⁴

Factors of 20518

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 10261

Divisors of 20518

• Number of divisors d(n): 4
• Complete list of divisors:
  1 2 10259 20518
• Sum of all divisors σ(n): 30780
• Sum of proper divisors (its aliquot sum) s(n): 10262
• 20518 is a deficient number, because the sum of its proper divisors (10262) is less than itself. Its deficiency is 10256

Bases of 20518

• Binary: 101000000100110₂
• Hexadecimal: 0x5026
• Base-36: FTY

Squares and roots of 20518

• 20518 squared (20518²) is 420988324
• 20518 cubed (20518³) is 8637838431832
• The square root of 20518 is 143.2410555671
• The cube root of 20518 is 27.3765263287

Scales and comparisons

• 20,518 seconds is equal to 5 hours, 41 minutes, 58 seconds.
• To count from 1 to 20,518 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 20518 cubic inches would be around 2.3 feet tall.

Recreational maths with 20518

• 20518 backwards is 81502
• The number of decimal digits it has is: 5
• The sum of 20518's digits is 16
• More coming soon!