# 520

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

What does the number 520 look like?

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

520 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 520:

### 23 × 5 × 13

(2 × 2 × 2 × 5 × 13)

See below for interesting mathematical facts about the number 520 from the Numbermatics database.

### Names of 520

• Cardinal: 520 can be written as Five hundred twenty.

### Scientific notation

• Scientific notation: 5.2 × 102

### Factors of 520

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 20

### Divisors of 520

• Number of divisors d(n): 16
• Complete list of divisors:
• Sum of all divisors σ(n): 1260
• Sum of proper divisors (its aliquot sum) s(n): 740
• 520 is an abundant number, because the sum of its proper divisors (740) is greater than itself. Its abundance is 220

### Bases of 520

• Binary: 10000010002
• Base-36: EG

### Squares and roots of 520

• 520 squared (5202) is 270400
• 520 cubed (5203) is 140608000
• The square root of 520 is 22.8035085019
• The cube root of 520 is 8.0414515171

### Scales and comparisons

How big is 520?
• 520 seconds is equal to 8 minutes, 40 seconds.
• To count from 1 to 520 would take you about four 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 520 cubic inches would be around 0.7 feet tall.

### Recreational maths with 520

• 520 backwards is 025
• The number of decimal digits it has is: 3
• The sum of 520's digits is 7
• More coming soon!

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The information we have on file for 520 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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