20,390 is an even composite number composed of three prime numbers multiplied together.

What does the number 20390 look like?

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

20390 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 20390:

2 × 5 × 2039

See below for interesting mathematical facts about the number 20390 from the Numbermatics database.

Names of 20390

  • Cardinal: 20390 can be written as Twenty thousand, three hundred ninety.

Scientific notation

  • Scientific notation: 2.039 × 104

Factors of 20390

  • Number of distinct prime factors ω(n): 3
  • Total number of prime factors Ω(n): 3
  • Sum of prime factors: 2046

Divisors of 20390

  • Number of divisors d(n): 8
  • Complete list of divisors:
  • Sum of all divisors σ(n): 36720
  • Sum of proper divisors (its aliquot sum) s(n): 16330
  • 20390 is a deficient number, because the sum of its proper divisors (16330) is less than itself. Its deficiency is 4060

Bases of 20390

  • Binary: 1001111101001102
  • Hexadecimal: 0x4FA6
  • Base-36: FQE

Squares and roots of 20390

  • 20390 squared (203902) is 415752100
  • 20390 cubed (203903) is 8477185319000
  • The square root of 20390 is 142.7935572777
  • The cube root of 20390 is 27.3194787345

Scales and comparisons

How big is 20390?
  • 20,390 seconds is equal to 5 hours, 39 minutes, 50 seconds.
  • To count from 1 to 20,390 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 20390 cubic inches would be around 2.3 feet tall.

Recreational maths with 20390

  • 20390 backwards is 09302
  • The number of decimal digits it has is: 5
  • The sum of 20390's digits is 14
  • More coming soon!

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The information we have on file for 20390 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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