# 320

## 320 is an even composite number composed of two prime numbers multiplied together.

What does the number 320 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 14 divisors.

320 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of fourteen divisors.

## Prime factorization of 320:

### 26 × 5

(2 × 2 × 2 × 2 × 2 × 2 × 5)

See below for interesting mathematical facts about the number 320 from the Numbermatics database.

### Names of 320

• Cardinal: 320 can be written as Three hundred twenty.

### Scientific notation

• Scientific notation: 3.2 × 102

### Factors of 320

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 7

### Divisors of 320

• Number of divisors d(n): 14
• Complete list of divisors:
• Sum of all divisors σ(n): 762
• Sum of proper divisors (its aliquot sum) s(n): 442
• 320 is an abundant number, because the sum of its proper divisors (442) is greater than itself. Its abundance is 122

### Bases of 320

• Binary: 1010000002
• Base-36: 8W

### Squares and roots of 320

• 320 squared (3202) is 102400
• 320 cubed (3203) is 32768000
• The square root of 320 is 17.8885438200
• The cube root of 320 is 6.8399037869

### Scales and comparisons

How big is 320?
• 320 seconds is equal to 5 minutes, 20 seconds.
• To count from 1 to 320 would take you about two 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 320 cubic inches would be around 0.6 feet tall.

### Recreational maths with 320

• 320 backwards is 023
• 320 is a Harshad number.
• The number of decimal digits it has is: 3
• The sum of 320's digits is 5
• More coming soon!