# 308

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

What does the number 308 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 12 divisors.

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

## Prime factorization of 308:

### 22 × 7 × 11

(2 × 2 × 7 × 11)

See below for interesting mathematical facts about the number 308 from the Numbermatics database.

### Names of 308

• Cardinal: 308 can be written as Three hundred eight.

### Scientific notation

• Scientific notation: 3.08 × 102

### Factors of 308

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 20

### Divisors of 308

• Number of divisors d(n): 12
• Complete list of divisors:
• Sum of all divisors σ(n): 672
• Sum of proper divisors (its aliquot sum) s(n): 364
• 308 is an abundant number, because the sum of its proper divisors (364) is greater than itself. Its abundance is 56

### Bases of 308

• Binary: 1001101002
• Base-36: 8K

### Squares and roots of 308

• 308 squared (3082) is 94864
• 308 cubed (3083) is 29218112
• The square root of 308 is 17.5499287747
• The cube root of 308 is 6.7533134165

### Scales and comparisons

How big is 308?
• 308 seconds is equal to 5 minutes, 8 seconds.
• To count from 1 to 308 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 308 cubic inches would be around 0.6 feet tall.

### Recreational maths with 308

• 308 backwards is 803
• 308 is a Harshad number.
• The number of decimal digits it has is: 3
• The sum of 308's digits is 11
• More coming soon!