# 21990760

## 21,990,760 is an even composite number composed of six prime numbers multiplied together.

What does the number 21990760 look like?

This visualization shows the relationship between its 6 prime factors (large circles) and 128 divisors.

21990760 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.

## Prime factorization of 21990760:

### 23 × 5 × 11 × 23 × 41 × 53

(2 × 2 × 2 × 5 × 11 × 23 × 41 × 53)

See below for interesting mathematical facts about the number 21990760 from the Numbermatics database.

### Names of 21990760

• Cardinal: 21990760 can be written as Twenty-one million, nine hundred ninety thousand, seven hundred sixty.

### Scientific notation

• Scientific notation: 2.199076 × 107

### Factors of 21990760

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 135

### Divisors of 21990760

• Number of divisors d(n): 128
• Complete list of divisors:
• Sum of all divisors σ(n): 58786560
• Sum of proper divisors (its aliquot sum) s(n): 36795800
• 21990760 is an abundant number, because the sum of its proper divisors (36795800) is greater than itself. Its abundance is 14805040

### Bases of 21990760

• Binary: 10100111110001101011010002
• Base-36: D3C6G

### Squares and roots of 21990760

• 21990760 squared (219907602) is 483593525377600
• 21990760 cubed (219907603) is 10634589154132710976000
• The square root of 21990760 is 4689.4306690685
• The cube root of 21990760 is 280.1646990215

### Scales and comparisons

How big is 21990760?
• 21,990,760 seconds is equal to 36 weeks, 2 days, 12 hours, 32 minutes, 40 seconds.
• To count from 1 to 21,990,760 would take you about two weeks!

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 21990760 cubic inches would be around 23.3 feet tall.

### Recreational maths with 21990760

• 21990760 backwards is 06709912
• The number of decimal digits it has is: 8
• The sum of 21990760's digits is 34
• More coming soon!