# 21166

## 21,166 is an even composite number composed of three prime numbers multiplied together.

What does the number 21166 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 8 divisors.

21166 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.

## Prime factorization of 21166:

### 2 × 19 × 557

See below for interesting mathematical facts about the number 21166 from the Numbermatics database.

### Names of 21166

• Cardinal: 21166 can be written as Twenty-one thousand, one hundred sixty-six.

### Scientific notation

• Scientific notation: 2.1166 × 104

### Factors of 21166

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 578

### Divisors of 21166

• Number of divisors d(n): 8
• Complete list of divisors:
• Sum of all divisors σ(n): 33480
• Sum of proper divisors (its aliquot sum) s(n): 12314
• 21166 is a deficient number, because the sum of its proper divisors (12314) is less than itself. Its deficiency is 8852

### Bases of 21166

• Binary: 1010010101011102
• Base-36: GBY

### Squares and roots of 21166

• 21166 squared (211662) is 447999556
• 21166 cubed (211663) is 9482358602296
• The square root of 21166 is 145.4853944559
• The cube root of 21166 is 27.6617465163

### Scales and comparisons

How big is 21166?
• 21,166 seconds is equal to 5 hours, 52 minutes, 46 seconds.
• To count from 1 to 21,166 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 21166 cubic inches would be around 2.3 feet tall.

### Recreational maths with 21166

• 21166 backwards is 66112
• The number of decimal digits it has is: 5
• The sum of 21166's digits is 16
• More coming soon!