21,366 is an even composite number composed of three prime numbers multiplied together.

What does the number 21366 look like?

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

21366 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 21366:

2 × 32 × 1187

(2 × 3 × 3 × 1187)

See below for interesting mathematical facts about the number 21366 from the Numbermatics database.

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Names Factors Divisors Scales Roots Fun

Names of 21366

  • Cardinal: 21366 can be written as Twenty-one thousand, three hundred sixty-six.

Scientific notation

  • Scientific notation: 2.1366 × 104

Factors of 21366

  • Number of distinct prime factors ω(n): 3
  • Total number of prime factors Ω(n): 4
  • Sum of prime factors: 1192

Divisors of 21366

  • Number of divisors d(n): 12
  • Complete list of divisors:
  • Sum of all divisors σ(n): 46332
  • Sum of proper divisors (its aliquot sum) s(n): 24966
  • 21366 is an abundant number, because the sum of its proper divisors (24966) is greater than itself. Its abundance is 3600

Bases of 21366

  • Binary: 1010011011101102
  • Hexadecimal: 0x5376
  • Base-36: GHI

Squares and roots of 21366

  • 21366 squared (213662) is 456505956
  • 21366 cubed (213663) is 9753706255896
  • The square root of 21366 is 146.1711325809
  • The cube root of 21366 is 27.7485998807

Scales and comparisons

How big is 21366?
  • 21,366 seconds is equal to 5 hours, 56 minutes, 6 seconds.
  • To count from 1 to 21,366 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 21366 cubic inches would be around 2.3 feet tall.

Recreational maths with 21366

  • 21366 backwards is 66312
  • 21366 is a Harshad number.
  • The number of decimal digits it has is: 5
  • The sum of 21366's digits is 18
  • More coming soon!

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The information we have on file for 21366 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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