# 20390

## 20,390 is an even composite number composed of three prime numbers multiplied together.

What does the number 20390 look like?

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

20390 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 20390:

### 2 × 5 × 2039

See below for interesting mathematical facts about the number 20390 from the Numbermatics database.

### Names of 20390

• Cardinal: 20390 can be written as Twenty thousand, three hundred ninety.

### Scientific notation

• Scientific notation: 2.039 × 104

### Factors of 20390

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 2046

### Divisors of 20390

• Number of divisors d(n): 8
• Complete list of divisors:
• Sum of all divisors σ(n): 36720
• Sum of proper divisors (its aliquot sum) s(n): 16330
• 20390 is a deficient number, because the sum of its proper divisors (16330) is less than itself. Its deficiency is 4060

### Bases of 20390

• Binary: 1001111101001102
• Base-36: FQE

### Squares and roots of 20390

• 20390 squared (203902) is 415752100
• 20390 cubed (203903) is 8477185319000
• The square root of 20390 is 142.7935572777
• The cube root of 20390 is 27.3194787345

### Scales and comparisons

How big is 20390?
• 20,390 seconds is equal to 5 hours, 39 minutes, 50 seconds.
• To count from 1 to 20,390 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 20390 cubic inches would be around 2.3 feet tall.

### Recreational maths with 20390

• 20390 backwards is 09302
• The number of decimal digits it has is: 5
• The sum of 20390's digits is 14
• More coming soon!

HTML: To link to this page, just copy and paste the link below into your blog, web page or email.

BBCODE: To link to this page in a forum post or comment box, just copy and paste the link code below: