# 218

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

What does the number 218 look like?

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

218 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 218:

### 2 × 109

See below for interesting mathematical facts about the number 218 from the Numbermatics database.

### Names of 218

• Cardinal: 218 can be written as Two hundred eighteen.

### Scientific notation

• Scientific notation: 2.18 × 102

### Factors of 218

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 111

### Divisors of 218

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 330
• Sum of proper divisors (its aliquot sum) s(n): 112
• 218 is a deficient number, because the sum of its proper divisors (112) is less than itself. Its deficiency is 106

### Bases of 218

• Binary: 110110102
• Base-36: 62

### Squares and roots of 218

• 218 squared (2182) is 47524
• 218 cubed (2183) is 10360232
• The square root of 218 is 14.7648230601
• The cube root of 218 is 6.0184616549

### Scales and comparisons

How big is 218?
• 218 seconds is equal to 3 minutes, 38 seconds.
• To count from 1 to 218 would take you about forty-nine 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 218 cubic inches would be around 0.5 feet tall.

### Recreational maths with 218

• 218 backwards is 812
• The number of decimal digits it has is: 3
• The sum of 218's digits is 11
• More coming soon!

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The information we have on file for 218 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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