# 20478

## 20,478 is an even composite number composed of three prime numbers multiplied together.

What does the number 20478 look like?

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

20478 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 20478:

### 2 × 3 × 3413

See below for interesting mathematical facts about the number 20478 from the Numbermatics database.

### Names of 20478

• Cardinal: 20478 can be written as Twenty thousand, four hundred seventy-eight.

### Scientific notation

• Scientific notation: 2.0478 × 104

### Factors of 20478

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 3418

### Divisors of 20478

• Number of divisors d(n): 8
• Complete list of divisors:
• Sum of all divisors σ(n): 40968
• Sum of proper divisors (its aliquot sum) s(n): 20490
• 20478 is an abundant number, because the sum of its proper divisors (20490) is greater than itself. Its abundance is 12

### Bases of 20478

• Binary: 1001111111111102
• Base-36: FSU

### Squares and roots of 20478

• 20478 squared (204782) is 419348484
• 20478 cubed (204783) is 8587418255352
• The square root of 20478 is 143.1013626769
• The cube root of 20478 is 27.3587245053

### Scales and comparisons

How big is 20478?
• 20,478 seconds is equal to 5 hours, 41 minutes, 18 seconds.
• To count from 1 to 20,478 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 20478 cubic inches would be around 2.3 feet tall.

### Recreational maths with 20478

• 20478 backwards is 87402
• The number of decimal digits it has is: 5
• The sum of 20478's digits is 21
• More coming soon!