# 1218

## 1,218 is an even composite number composed of four prime numbers multiplied together.

What does the number 1218 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 16 divisors.

1218 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixteen divisors.

## Prime factorization of 1218:

### 2 × 3 × 7 × 29

See below for interesting mathematical facts about the number 1218 from the Numbermatics database.

### Names of 1218

• Cardinal: 1218 can be written as One thousand, two hundred eighteen.

### Scientific notation

• Scientific notation: 1.218 × 103

### Factors of 1218

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 41

### Divisors of 1218

• Number of divisors d(n): 16
• Complete list of divisors:
• Sum of all divisors σ(n): 2880
• Sum of proper divisors (its aliquot sum) s(n): 1662
• 1218 is an abundant number, because the sum of its proper divisors (1662) is greater than itself. Its abundance is 444

### Bases of 1218

• Binary: 100110000102
• Base-36: XU

### Squares and roots of 1218

• 1218 squared (12182) is 1483524
• 1218 cubed (12183) is 1806932232
• The square root of 1218 is 34.8998567331
• The cube root of 1218 is 10.6794551477

### Scales and comparisons

How big is 1218?
• 1,218 seconds is equal to 20 minutes, 18 seconds.
• To count from 1 to 1,218 would take you about twenty 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 1218 cubic inches would be around 0.9 feet tall.

### Recreational maths with 1218

• 1218 backwards is 8121
• The number of decimal digits it has is: 4
• The sum of 1218's digits is 12
• More coming soon!