21,675 is an odd composite number composed of three prime numbers multiplied together.

What does the number 21675 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 18 divisors.

21675 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eighteen divisors.

Prime factorization of 21675:

3 × 52 × 172

(3 × 5 × 5 × 17 × 17)

See below for interesting mathematical facts about the number 21675 from the Numbermatics database.

Names of 21675

  • Cardinal: 21675 can be written as Twenty-one thousand, six hundred seventy-five.

Scientific notation

  • Scientific notation: 2.1675 × 104

Factors of 21675

  • Number of distinct prime factors ω(n): 3
  • Total number of prime factors Ω(n): 5
  • Sum of prime factors: 25

Divisors of 21675

  • Number of divisors d(n): 18
  • Complete list of divisors:
  • Sum of all divisors σ(n): 38068
  • Sum of proper divisors (its aliquot sum) s(n): 16393
  • 21675 is a deficient number, because the sum of its proper divisors (16393) is less than itself. Its deficiency is 5282

Bases of 21675

  • Binary: 1010100101010112
  • Hexadecimal: 0x54AB
  • Base-36: GQ3

Squares and roots of 21675

  • 21675 squared (216752) is 469805625
  • 21675 cubed (216753) is 10183036921875
  • The square root of 21675 is 147.2243186433
  • The cube root of 21675 is 27.8817290223

Scales and comparisons

How big is 21675?
  • 21,675 seconds is equal to 6 hours, 1 minute, 15 seconds.
  • To count from 1 to 21,675 would take you about six 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 21675 cubic inches would be around 2.3 feet tall.

Recreational maths with 21675

  • 21675 backwards is 57612
  • The number of decimal digits it has is: 5
  • The sum of 21675's digits is 21
  • More coming soon!

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The information we have on file for 21675 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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