28,309 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 28309 look like?

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

28309 is a prime number. Like all primes (except two), it is an odd number.

Prime factorization of 28309:


See below for interesting mathematical facts about the number 28309 from the Numbermatics database.

Names of 28309

  • Cardinal: 28309 can be written as Twenty-eight thousand, three hundred nine.

Scientific notation

  • Scientific notation: 2.8309 × 104

Factors of 28309

  • Number of distinct prime factors ω(n): 1
  • Total number of prime factors Ω(n): 1
  • Sum of prime factors: 28309

Divisors of 28309

  • Number of divisors d(n): 2
  • Complete list of divisors:
  • Sum of all divisors σ(n): 28310
  • Sum of proper divisors (its aliquot sum) s(n): 1
  • 28309 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 28308

Bases of 28309

  • Binary: 1101110100101012
  • Hexadecimal: 0x6E95
  • Base-36: LUD

Squares and roots of 28309

  • 28309 squared (283092) is 801399481
  • 28309 cubed (283093) is 22686817907629
  • The square root of 28309 is 168.2527860097
  • The cube root of 28309 is 30.4771844061

Scales and comparisons

How big is 28309?
  • 28,309 seconds is equal to 7 hours, 51 minutes, 49 seconds.
  • To count from 1 to 28,309 would take you about seven 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 28309 cubic inches would be around 2.5 feet tall.

Recreational maths with 28309

  • 28309 backwards is 90382
  • The number of decimal digits it has is: 5
  • The sum of 28309's digits is 22
  • More coming soon!

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"Number 28309 - Facts about the integer". Numbermatics.com. 2022. Web. 25 May 2022.

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Numbermatics. (2022). Number 28309 - Facts about the integer. Retrieved 25 May 2022, from https://numbermatics.com/n/28309/

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Numbermatics. 2022. "Number 28309 - Facts about the integer". https://numbermatics.com/n/28309/

The information we have on file for 28309 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 28309, math, Factors of 28309, curriculum, school, college, exams, university, Prime factorization of 28309, STEM, science, technology, engineering, physics, economics, calculator, twenty-eight thousand, three hundred nine.

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