30728

30,728 is an even composite number composed of three prime numbers multiplied together.

What does the number 30728 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 16 divisors.

30728 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of sixteen divisors.

Prime factorization of 30728:

23 × 23 × 167

(2 × 2 × 2 × 23 × 167)

See below for interesting mathematical facts about the number 30728 from the Numbermatics database.


Names of 30728

  • Cardinal: 30728 can be written as Thirty thousand, seven hundred twenty-eight.

Scientific notation

  • Scientific notation: 3.0728 × 104

Factors of 30728

  • Number of distinct prime factors ω(n): 3
  • Total number of prime factors Ω(n): 5
  • Sum of prime factors: 192

Divisors of 30728

  • Number of divisors d(n): 16
  • Complete list of divisors:
  • Sum of all divisors σ(n): 60480
  • Sum of proper divisors (its aliquot sum) s(n): 29752
  • 30728 is a deficient number, because the sum of its proper divisors (29752) is less than itself. Its deficiency is 976

Bases of 30728

  • Binary: 1111000000010002
  • Hexadecimal: 0x7808
  • Base-36: NPK

Squares and roots of 30728

  • 30728 squared (307282) is 944209984
  • 30728 cubed (307283) is 29013684388352
  • The square root of 30728 is 175.2940386893
  • The cube root of 30728 is 31.3216595515

Scales and comparisons

How big is 30728?
  • 30,728 seconds is equal to 8 hours, 32 minutes, 8 seconds.
  • To count from 1 to 30,728 would take you about eight 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 30728 cubic inches would be around 2.6 feet tall.

Recreational maths with 30728

  • 30728 backwards is 82703
  • The number of decimal digits it has is: 5
  • The sum of 30728's digits is 20
  • More coming soon!

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"Number 30728 - Facts about the integer". Numbermatics.com. 2022. Web. 26 September 2022.

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Numbermatics. (2022). Number 30728 - Facts about the integer. Retrieved 26 September 2022, from https://numbermatics.com/n/30728/

Chicago style:
Numbermatics. 2022. "Number 30728 - Facts about the integer". https://numbermatics.com/n/30728/

The information we have on file for 30728 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 30728, math, Factors of 30728, curriculum, school, college, exams, university, Prime factorization of 30728, STEM, science, technology, engineering, physics, economics, calculator, thirty thousand, seven hundred twenty-eight.

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