20,749 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 20749 look like?

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

20749 is a prime number. Like all primes (except two), it is an odd number.

Prime factorization of 20749:


See below for interesting mathematical facts about the number 20749 from the Numbermatics database.

Names of 20749

  • Cardinal: 20749 can be written as Twenty thousand, seven hundred forty-nine.

Scientific notation

  • Scientific notation: 2.0749 × 104

Factors of 20749

  • Number of distinct prime factors ω(n): 1
  • Total number of prime factors Ω(n): 1
  • Sum of prime factors: 20749

Divisors of 20749

  • Number of divisors d(n): 2
  • Complete list of divisors:
  • Sum of all divisors σ(n): 20750
  • Sum of proper divisors (its aliquot sum) s(n): 1
  • 20749 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 20748

Bases of 20749

  • Binary: 1010001000011012
  • Hexadecimal: 0x510D
  • Base-36: G0D

Squares and roots of 20749

  • 20749 squared (207492) is 430521001
  • 20749 cubed (207493) is 8932880249749
  • The square root of 20749 is 144.0451318163
  • The cube root of 20749 is 27.4788818585

Scales and comparisons

How big is 20749?
  • 20,749 seconds is equal to 5 hours, 45 minutes, 49 seconds.
  • To count from 1 to 20,749 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 20749 cubic inches would be around 2.3 feet tall.

Recreational maths with 20749

  • 20749 backwards is 94702
  • The number of decimal digits it has is: 5
  • The sum of 20749's digits is 22
  • More coming soon!

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"Number 20749 - Facts about the integer". Numbermatics.com. 2021. Web. 22 October 2021.

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Numbermatics. (2021). Number 20749 - Facts about the integer. Retrieved 22 October 2021, from https://numbermatics.com/n/20749/

Chicago style:
Numbermatics. 2021. "Number 20749 - Facts about the integer". https://numbermatics.com/n/20749/

The information we have on file for 20749 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!

Keywords: Divisors of 20749, math, Factors of 20749, curriculum, school, college, exams, university, Prime factorization of 20749, STEM, science, technology, engineering, physics, economics, calculator, twenty thousand, seven hundred forty-nine.

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