# 20000

## 20,000 is an even composite number composed of two prime numbers multiplied together.

What does the number 20000 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 30 divisors.

20000 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of thirty divisors.

## Prime factorization of 20000:

### 25 × 54

(2 × 2 × 2 × 2 × 2 × 5 × 5 × 5 × 5)

See below for interesting mathematical facts about the number 20000 from the Numbermatics database.

### Names of 20000

• Cardinal: 20000 can be written as Twenty thousand.

### Scientific notation

• Scientific notation: 2 × 104

### Factors of 20000

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 7

### Divisors of 20000

• Number of divisors d(n): 30
• Complete list of divisors:
• Sum of all divisors σ(n): 49203
• Sum of proper divisors (its aliquot sum) s(n): 29203
• 20000 is an abundant number, because the sum of its proper divisors (29203) is greater than itself. Its abundance is 9203

### Bases of 20000

• Binary: 1001110001000002
• Base-36: FFK

### Squares and roots of 20000

• 20000 squared (200002) is 400000000
• 20000 cubed (200003) is 8000000000000
• The square root of 20000 is 141.4213562373
• The cube root of 20000 is 27.1441761659

### Scales and comparisons

How big is 20000?
• 20,000 seconds is equal to 5 hours, 33 minutes, 20 seconds.
• To count from 1 to 20,000 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 20000 cubic inches would be around 2.3 feet tall.

### Recreational maths with 20000

• 20000 backwards is 00002
• 20000 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 20000's digits is 2
• More coming soon!