# 2405

## 2,405 is an odd composite number composed of three prime numbers multiplied together.

What does the number 2405 look like?

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

2405 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.

## Prime factorization of 2405:

### 5 × 13 × 37

See below for interesting mathematical facts about the number 2405 from the Numbermatics database.

### Names of 2405

• Cardinal: 2405 can be written as Two thousand, four hundred five.

### Scientific notation

• Scientific notation: 2.405 × 103

### Factors of 2405

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 55

### Divisors of 2405

• Number of divisors d(n): 8
• Complete list of divisors:
• Sum of all divisors σ(n): 3192
• Sum of proper divisors (its aliquot sum) s(n): 787
• 2405 is a deficient number, because the sum of its proper divisors (787) is less than itself. Its deficiency is 1618

### Bases of 2405

• Binary: 1001011001012
• Base-36: 1UT

### Squares and roots of 2405

• 2405 squared (24052) is 5784025
• 2405 cubed (24053) is 13910580125
• The square root of 2405 is 49.0407993409
• The cube root of 2405 is 13.3979502321

### Scales and comparisons

How big is 2405?
• 2,405 seconds is equal to 40 minutes, 5 seconds.
• To count from 1 to 2,405 would take you about forty minutes.

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 2405 cubic inches would be around 1.1 feet tall.

### Recreational maths with 2405

• 2405 backwards is 5042
• The number of decimal digits it has is: 4
• The sum of 2405's digits is 11
• More coming soon!