# 978

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

What does the number 978 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 8 divisors.

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

## Prime factorization of 978:

### 2 × 3 × 163

See below for interesting mathematical facts about the number 978 from the Numbermatics database.

### Names of 978

• Cardinal: 978 can be written as Nine hundred seventy-eight.

### Scientific notation

• Scientific notation: 9.78 × 102

### Factors of 978

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 168

### Divisors of 978

• Number of divisors d(n): 8
• Complete list of divisors:
• Sum of all divisors σ(n): 1968
• Sum of proper divisors (its aliquot sum) s(n): 990
• 978 is an abundant number, because the sum of its proper divisors (990) is greater than itself. Its abundance is 12

### Bases of 978

• Binary: 11110100102
• Base-36: R6

### Squares and roots of 978

• 978 squared (9782) is 956484
• 978 cubed (9783) is 935441352
• The square root of 978 is 31.2729915423
• The cube root of 978 is 9.9261222181

### Scales and comparisons

How big is 978?
• 978 seconds is equal to 16 minutes, 18 seconds.
• To count from 1 to 978 would take you about eight 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 978 cubic inches would be around 0.8 feet tall.

### Recreational maths with 978

• 978 backwards is 879
• The number of decimal digits it has is: 3
• The sum of 978's digits is 24
• More coming soon!