# 720

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

What does the number 720 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 30 divisors.

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

## Prime factorization of 720:

### 24 × 32 × 5

(2 × 2 × 2 × 2 × 3 × 3 × 5)

See below for interesting mathematical facts about the number 720 from the Numbermatics database.

### Names of 720

• Cardinal: 720 can be written as Seven hundred twenty.

### Scientific notation

• Scientific notation: 7.2 × 102

### Factors of 720

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 10

### Divisors of 720

• Number of divisors d(n): 30
• Complete list of divisors:
• Sum of all divisors σ(n): 2418
• Sum of proper divisors (its aliquot sum) s(n): 1698
• 720 is an abundant number, because the sum of its proper divisors (1698) is greater than itself. Its abundance is 978

### Bases of 720

• Binary: 10110100002
• Base-36: K0

### Squares and roots of 720

• 720 squared (7202) is 518400
• 720 cubed (7203) is 373248000
• The square root of 720 is 26.8328157299
• The cube root of 720 is 8.9628094931

### Scales and comparisons

How big is 720?
• 720 seconds is equal to 12 minutes.
• To count from 1 to 720 would take you about six 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 720 cubic inches would be around 0.7 feet tall.

### Recreational maths with 720

• 720 backwards is 027
• 720 is a Harshad number.
• The number of decimal digits it has is: 3
• The sum of 720's digits is 9
• More coming soon!

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The information we have on file for 720 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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