# 40000

## 40,000 is an even composite number composed of two prime numbers multiplied together.

What does the number 40000 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 35 divisors.

40000 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of thirty-five divisors.

## Prime factorization of 40000:

### 26 × 54

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

See below for interesting mathematical facts about the number 40000 from the Numbermatics database.

### Names of 40000

• Cardinal: 40000 can be written as Forty thousand.

### Scientific notation

• Scientific notation: 4 × 104

### Factors of 40000

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 7

### Divisors of 40000

• Number of divisors d(n): 35
• Complete list of divisors:
• Sum of all divisors σ(n): 99187
• Sum of proper divisors (its aliquot sum) s(n): 59187
• 40000 is an abundant number, because the sum of its proper divisors (59187) is greater than itself. Its abundance is 19187

### Bases of 40000

• Binary: 10011100010000002
• Base-36: UV4

### Squares and roots of 40000

• 40000 squared (400002) is 1600000000
• 40000 cubed (400003) is 64000000000000
• 40000 is a perfect square number. Its square root is 200
• The cube root of 40000 is 34.1995189335

### Scales and comparisons

How big is 40000?
• 40,000 seconds is equal to 11 hours, 6 minutes, 40 seconds.
• To count from 1 to 40,000 would take you about eleven 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 40000 cubic inches would be around 2.8 feet tall.

### Recreational maths with 40000

• 40000 backwards is 00004
• 40000 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 40000's digits is 4
• More coming soon!