20,818 is an even composite number composed of three prime numbers multiplied together.

What does the number 20818 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 8 divisors.

20818 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.

Prime factorization of 20818:

2 × 7 × 1487

See below for interesting mathematical facts about the number 20818 from the Numbermatics database.

Names of 20818

  • Cardinal: 20818 can be written as Twenty thousand, eight hundred eighteen.

Scientific notation

  • Scientific notation: 2.0818 × 104

Factors of 20818

  • Number of distinct prime factors ω(n): 3
  • Total number of prime factors Ω(n): 3
  • Sum of prime factors: 1496

Divisors of 20818

  • Number of divisors d(n): 8
  • Complete list of divisors:
  • Sum of all divisors σ(n): 35712
  • Sum of proper divisors (its aliquot sum) s(n): 14894
  • 20818 is a deficient number, because the sum of its proper divisors (14894) is less than itself. Its deficiency is 5924

Bases of 20818

  • Binary: 1010001010100102
  • Hexadecimal: 0x5152
  • Base-36: G2A

Squares and roots of 20818

  • 20818 squared (208182) is 433389124
  • 20818 cubed (208183) is 9022294783432
  • The square root of 20818 is 144.2844412957
  • The cube root of 20818 is 27.5093081439

Scales and comparisons

How big is 20818?
  • 20,818 seconds is equal to 5 hours, 46 minutes, 58 seconds.
  • To count from 1 to 20,818 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 20818 cubic inches would be around 2.3 feet tall.

Recreational maths with 20818

  • 20818 backwards is 81802
  • The number of decimal digits it has is: 5
  • The sum of 20818's digits is 19
  • More coming soon!

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The information we have on file for 20818 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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