# 21000170

## 21,000,170 is an even composite number composed of four prime numbers multiplied together.

What does the number 21000170 look like?

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

21000170 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 21000170:

### 2 × 5 × 839 × 2503

See below for interesting mathematical facts about the number 21000170 from the Numbermatics database.

### Names of 21000170

• Cardinal: 21000170 can be written as Twenty-one million, one hundred seventy.

### Scientific notation

• Scientific notation: 2.100017 × 107

### Factors of 21000170

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 3349

### Divisors of 21000170

• Number of divisors d(n): 16
• Complete list of divisors:
• Sum of all divisors σ(n): 37860480
• Sum of proper divisors (its aliquot sum) s(n): 16860310
• 21000170 is a deficient number, because the sum of its proper divisors (16860310) is less than itself. Its deficiency is 4139860

### Bases of 21000170

• Binary: 10100000001101111111010102
• Base-36: CI3U2

### Squares and roots of 21000170

• 21000170 squared (210001702) is 441007140028900
• 21000170 cubed (210001703) is 9261224911820704913000
• The square root of 21000170 is 4582.5942434389
• The cube root of 21000170 is 275.8931621077

### Scales and comparisons

How big is 21000170?
• 21,000,170 seconds is equal to 34 weeks, 5 days, 1 hour, 22 minutes, 50 seconds.
• To count from 1 to 21,000,170 would take you about fourteen 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 21000170 cubic inches would be around 23 feet tall.

### Recreational maths with 21000170

• 21000170 backwards is 07100012
• The number of decimal digits it has is: 8
• The sum of 21000170's digits is 11
• More coming soon!