# 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
• 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!