19820

19,820 is an even composite number composed of three prime numbers multiplied together.

What does the number 19820 look like?

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

19820 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 19820:

22 × 5 × 991

(2 × 2 × 5 × 991)

See below for interesting mathematical facts about the number 19820 from the Numbermatics database.


Names of 19820

  • Cardinal: 19820 can be written as Nineteen thousand, eight hundred twenty.

Scientific notation

  • Scientific notation: 1.982 × 104

Factors of 19820

  • Number of distinct prime factors ω(n): 3
  • Total number of prime factors Ω(n): 4
  • Sum of prime factors: 998

Divisors of 19820

  • Number of divisors d(n): 12
  • Complete list of divisors:
  • Sum of all divisors σ(n): 41664
  • Sum of proper divisors (its aliquot sum) s(n): 21844
  • 19820 is an abundant number, because the sum of its proper divisors (21844) is greater than itself. Its abundance is 2024

Bases of 19820

  • Binary: 1001101011011002
  • Hexadecimal: 0x4D6C
  • Base-36: FAK

Squares and roots of 19820

  • 19820 squared (198202) is 392832400
  • 19820 cubed (198203) is 7785938168000
  • The square root of 19820 is 140.7835217631
  • The cube root of 19820 is 27.0624981111

Scales and comparisons

How big is 19820?
  • 19,820 seconds is equal to 5 hours, 30 minutes, 20 seconds.
  • To count from 1 to 19,820 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 19820 cubic inches would be around 2.3 feet tall.

Recreational maths with 19820

  • 19820 backwards is 02891
  • 19820 is a Harshad number.
  • The number of decimal digits it has is: 5
  • The sum of 19820's digits is 20
  • More coming soon!

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MLA style:
"Number 19820 - Facts about the integer". Numbermatics.com. 2024. Web. 29 March 2024.

APA style:
Numbermatics. (2024). Number 19820 - Facts about the integer. Retrieved 29 March 2024, from https://numbermatics.com/n/19820/

Chicago style:
Numbermatics. 2024. "Number 19820 - Facts about the integer". https://numbermatics.com/n/19820/

The information we have on file for 19820 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 19820, math, Factors of 19820, curriculum, school, college, exams, university, Prime factorization of 19820, STEM, science, technology, engineering, physics, economics, calculator, nineteen thousand, eight hundred twenty.

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