# 210

## 210 is an even composite number composed of four prime numbers multiplied together.

What does the number 210 look like?

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

210 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 210:

### 2 × 3 × 5 × 7

See below for interesting mathematical facts about the number 210 from the Numbermatics database.

### Names of 210

• Cardinal: 210 can be written as Two hundred ten.

### Scientific notation

• Scientific notation: 2.1 × 102

### Factors of 210

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 17

### Divisors of 210

• Number of divisors d(n): 16
• Complete list of divisors:
• Sum of all divisors σ(n): 576
• Sum of proper divisors (its aliquot sum) s(n): 366
• 210 is an abundant number, because the sum of its proper divisors (366) is greater than itself. Its abundance is 156

### Bases of 210

• Binary: 110100102
• Base-36: 5U

### Squares and roots of 210

• 210 squared (2102) is 44100
• 210 cubed (2103) is 9261000
• The square root of 210 is 14.4913767461
• The cube root of 210 is 5.9439219527

### Scales and comparisons

How big is 210?
• 210 seconds is equal to 3 minutes, 30 seconds.
• To count from 1 to 210 would take you about forty-five 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 210 cubic inches would be around 0.5 feet tall.

### Recreational maths with 210

• 210 backwards is 012
• 210 is a Harshad number.
• The number of decimal digits it has is: 3
• The sum of 210's digits is 3
• More coming soon!