# 172

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

What does the number 172 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 6 divisors.

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

## Prime factorization of 172:

### 22 × 43

(2 × 2 × 43)

See below for interesting mathematical facts about the number 172 from the Numbermatics database.

### Names of 172

• Cardinal: 172 can be written as One hundred seventy-two.

### Scientific notation

• Scientific notation: 1.72 × 102

### Factors of 172

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 45

### Divisors of 172

• Number of divisors d(n): 6
• Complete list of divisors:
• Sum of all divisors σ(n): 308
• Sum of proper divisors (its aliquot sum) s(n): 136
• 172 is a deficient number, because the sum of its proper divisors (136) is less than itself. Its deficiency is 36

### Bases of 172

• Binary: 101011002
• Base-36: 4S

### Squares and roots of 172

• 172 squared (1722) is 29584
• 172 cubed (1723) is 5088448
• The square root of 172 is 13.1148770487
• The cube root of 172 is 5.5612977665

### Scales and comparisons

How big is 172?
• 172 seconds is equal to 2 minutes, 52 seconds.
• To count from 1 to 172 would take you about twenty-six 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 172 cubic inches would be around 0.5 feet tall.

### Recreational maths with 172

• 172 backwards is 271
• The number of decimal digits it has is: 3
• The sum of 172's digits is 10
• More coming soon!