1520

1,520 is an even composite number composed of three prime numbers multiplied together.

What does the number 1520 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 20 divisors.

1520 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty divisors.

Prime factorization of 1520:

24 × 5 × 19

(2 × 2 × 2 × 2 × 5 × 19)

See below for interesting mathematical facts about the number 1520 from the Numbermatics database.


Names of 1520

  • Cardinal: 1520 can be written as One thousand, five hundred twenty.

Scientific notation

  • Scientific notation: 1.52 × 103

Factors of 1520

  • Number of distinct prime factors ω(n): 3
  • Total number of prime factors Ω(n): 6
  • Sum of prime factors: 26

Divisors of 1520

  • Number of divisors d(n): 20
  • Complete list of divisors:
  • Sum of all divisors σ(n): 3720
  • Sum of proper divisors (its aliquot sum) s(n): 2200
  • 1520 is an abundant number, because the sum of its proper divisors (2200) is greater than itself. Its abundance is 680

Bases of 1520

  • Binary: 101111100002
  • Hexadecimal: 0x5F0
  • Base-36: 168

Squares and roots of 1520

  • 1520 squared (15202) is 2310400
  • 1520 cubed (15203) is 3511808000
  • The square root of 1520 is 38.9871773795
  • The cube root of 1520 is 11.4977941579

Scales and comparisons

How big is 1520?
  • 1,520 seconds is equal to 25 minutes, 20 seconds.
  • To count from 1 to 1,520 would take you about twenty-five minutes.

    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 1520 cubic inches would be around 1 feet tall.

Recreational maths with 1520

  • 1520 backwards is 0251
  • 1520 is a Harshad number.
  • The number of decimal digits it has is: 4
  • The sum of 1520's digits is 8
  • More coming soon!

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"Number 1520 - Facts about the integer". Numbermatics.com. 2020. Web. 28 February 2020.

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The information we have on file for 1520 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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