# 21875000

## 21,875,000 is an even composite number composed of three prime numbers multiplied together.

What does the number 21875000 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 72 divisors.

21875000 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of seventy-two divisors.

## Prime factorization of 21875000:

### 23 × 58 × 7

(2 × 2 × 2 × 5 × 5 × 5 × 5 × 5 × 5 × 5 × 5 × 7)

See below for interesting mathematical facts about the number 21875000 from the Numbermatics database.

### Names of 21875000

• Cardinal: 21875000 can be written as Twenty-one million, eight hundred seventy-five thousand.

### Scientific notation

• Scientific notation: 2.1875 × 107

### Factors of 21875000

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 14

### Divisors of 21875000

• Number of divisors d(n): 72
• Complete list of divisors:
• Sum of all divisors σ(n): 58593720
• Sum of proper divisors (its aliquot sum) s(n): 36718720
• 21875000 is an abundant number, because the sum of its proper divisors (36718720) is greater than itself. Its abundance is 14843720

### Bases of 21875000

• Binary: 10100110111001001001110002
• Base-36: D0UUW

### Squares and roots of 21875000

• 21875000 squared (218750002) is 478515625000000
• 21875000 cubed (218750003) is 10467529296875000000000
• The square root of 21875000 is 4677.0717334675
• The cube root of 21875000 is 279.6722355203

### Scales and comparisons

How big is 21875000?
• 21,875,000 seconds is equal to 36 weeks, 1 day, 4 hours, 23 minutes, 20 seconds.
• To count from 1 to 21,875,000 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 21875000 cubic inches would be around 23.3 feet tall.

### Recreational maths with 21875000

• 21875000 backwards is 00057812
• The number of decimal digits it has is: 8
• The sum of 21875000's digits is 23
• More coming soon!