16,921 is a prime number. Like all primes greater than two, it is odd and has no factors apart from itself and one.

What does the number 16921 look like?

As a prime, it is not composed of any other numbers and has no internal structure.

16921 is a prime number. Like all primes (except two), it is an odd number.

Prime factorization of 16921:


See below for interesting mathematical facts about the number 16921 from the Numbermatics database.

Names of 16921

  • Cardinal: 16921 can be written as Sixteen thousand, nine hundred twenty-one.

Scientific notation

  • Scientific notation: 1.6921 × 104

Factors of 16921

  • Number of distinct prime factors ω(n): 1
  • Total number of prime factors Ω(n): 1
  • Sum of prime factors: 16921

Divisors of 16921

  • Number of divisors d(n): 2
  • Complete list of divisors:
  • Sum of all divisors σ(n): 16922
  • Sum of proper divisors (its aliquot sum) s(n): 1
  • 16921 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 16920

Bases of 16921

  • Binary: 1000010000110012
  • Hexadecimal: 0x4219
  • Base-36: D21

Squares and roots of 16921

  • 16921 squared (169212) is 286320241
  • 16921 cubed (169213) is 4844824797961
  • The square root of 16921 is 130.0807441553
  • The cube root of 16921 is 25.6729243937

Scales and comparisons

How big is 16921?
  • 16,921 seconds is equal to 4 hours, 42 minutes, 1 second.
  • To count from 1 to 16,921 would take you about four 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 16921 cubic inches would be around 2.1 feet tall.

Recreational maths with 16921

  • 16921 backwards is 12961
  • The number of decimal digits it has is: 5
  • The sum of 16921's digits is 19
  • More coming soon!

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The information we have on file for 16921 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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