20,828 is an even composite number composed of three prime numbers multiplied together.

What does the number 20828 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 12 divisors.

20828 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.

Prime factorization of 20828:

22 × 41 × 127

(2 × 2 × 41 × 127)

See below for interesting mathematical facts about the number 20828 from the Numbermatics database.

Names of 20828

  • Cardinal: 20828 can be written as Twenty thousand, eight hundred twenty-eight.

Scientific notation

  • Scientific notation: 2.0828 × 104

Factors of 20828

  • Number of distinct prime factors ω(n): 3
  • Total number of prime factors Ω(n): 4
  • Sum of prime factors: 170

Divisors of 20828

  • Number of divisors d(n): 12
  • Complete list of divisors:
  • Sum of all divisors σ(n): 37632
  • Sum of proper divisors (its aliquot sum) s(n): 16804
  • 20828 is a deficient number, because the sum of its proper divisors (16804) is less than itself. Its deficiency is 4024

Bases of 20828

  • Binary: 1010001010111002
  • Hexadecimal: 0x515C
  • Base-36: G2K

Squares and roots of 20828

  • 20828 squared (208282) is 433805584
  • 20828 cubed (208283) is 9035302703552
  • The square root of 20828 is 144.3190909063
  • The cube root of 20828 is 27.5137121701

Scales and comparisons

How big is 20828?
  • 20,828 seconds is equal to 5 hours, 47 minutes, 8 seconds.
  • To count from 1 to 20,828 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 20828 cubic inches would be around 2.3 feet tall.

Recreational maths with 20828

  • 20828 backwards is 82802
  • The number of decimal digits it has is: 5
  • The sum of 20828's digits is 20
  • More coming soon!

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The information we have on file for 20828 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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