# 82

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

What does the number 82 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

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

## Prime factorization of 82:

### 2 × 41

See below for interesting mathematical facts about the number 82 from the Numbermatics database.

### Names of 82

• Cardinal: 82 can be written as Eighty-two.

### Scientific notation

• Scientific notation: 8.2 × 101

### Factors of 82

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 43

### Divisors of 82

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 126
• Sum of proper divisors (its aliquot sum) s(n): 44
• 82 is a deficient number, because the sum of its proper divisors (44) is less than itself. Its deficiency is 38

### Bases of 82

• Binary: 10100102
• Base-36: 2A

### Squares and roots of 82

• 82 squared (822) is 6724
• 82 cubed (823) is 551368
• The square root of 82 is 9.0553851381
• The cube root of 82 is 4.3444814857

### Scales and comparisons

How big is 82?
• 82 seconds is equal to 1 minute, 22 seconds.
• To count from 1 to 82 would take you about forty-one seconds.

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 82 cubic inches would be around 0.4 feet tall.

### Recreational maths with 82

• 82 backwards is 28
• The number of decimal digits it has is: 2
• The sum of 82's digits is 10
• More coming soon!