# 20403

## 20,403 is an odd composite number composed of two prime numbers multiplied together.

What does the number 20403 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 6 divisors.

20403 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of six divisors.

## Prime factorization of 20403:

### 32 × 2267

(3 × 3 × 2267)

See below for interesting mathematical facts about the number 20403 from the Numbermatics database.

### Names of 20403

• Cardinal: 20403 can be written as Twenty thousand, four hundred three.

### Scientific notation

• Scientific notation: 2.0403 × 104

### Factors of 20403

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 2270

### Divisors of 20403

• Number of divisors d(n): 6
• Complete list of divisors:
• Sum of all divisors σ(n): 29484
• Sum of proper divisors (its aliquot sum) s(n): 9081
• 20403 is a deficient number, because the sum of its proper divisors (9081) is less than itself. Its deficiency is 11322

### Bases of 20403

• Binary: 1001111101100112
• Base-36: FQR

### Squares and roots of 20403

• 20403 squared (204032) is 416282409
• 20403 cubed (204033) is 8493409990827
• The square root of 20403 is 142.8390702855
• The cube root of 20403 is 27.3252835043

### Scales and comparisons

How big is 20403?
• 20,403 seconds is equal to 5 hours, 40 minutes, 3 seconds.
• To count from 1 to 20,403 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 20403 cubic inches would be around 2.3 feet tall.

### Recreational maths with 20403

• 20403 backwards is 30402
• 20403 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 20403's digits is 9
• More coming soon!