# 18180

## 18,180 is an even composite number composed of four prime numbers multiplied together.

What does the number 18180 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 36 divisors.

18180 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of thirty-six divisors.

## Prime factorization of 18180:

### 22 × 32 × 5 × 101

(2 × 2 × 3 × 3 × 5 × 101)

See below for interesting mathematical facts about the number 18180 from the Numbermatics database.

### Names of 18180

• Cardinal: 18180 can be written as Eighteen thousand, one hundred eighty.

### Scientific notation

• Scientific notation: 1.818 × 104

### Factors of 18180

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 111

### Divisors of 18180

• Number of divisors d(n): 36
• Complete list of divisors:
• Sum of all divisors σ(n): 55692
• Sum of proper divisors (its aliquot sum) s(n): 37512
• 18180 is an abundant number, because the sum of its proper divisors (37512) is greater than itself. Its abundance is 19332

### Bases of 18180

• Binary: 1000111000001002
• Base-36: E10

### Squares and roots of 18180

• 18180 squared (181802) is 330512400
• 18180 cubed (181803) is 6008715432000
• The square root of 18180 is 134.8332303255
• The cube root of 18180 is 26.2944824021

### Scales and comparisons

How big is 18180?
• 18,180 seconds is equal to 5 hours, 3 minutes.
• To count from 1 to 18,180 would take you about five hours.

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 18180 cubic inches would be around 2.2 feet tall.

### Recreational maths with 18180

• 18180 backwards is 08181
• 18180 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 18180's digits is 18
• More coming soon!