# 2745

## 2,745 is an odd composite number composed of three prime numbers multiplied together.

What does the number 2745 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 12 divisors.

2745 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.

## Prime factorization of 2745:

### 32 × 5 × 61

(3 × 3 × 5 × 61)

See below for interesting mathematical facts about the number 2745 from the Numbermatics database.

### Names of 2745

• Cardinal: 2745 can be written as Two thousand, seven hundred forty-five.

### Scientific notation

• Scientific notation: 2.745 × 103

### Factors of 2745

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 69

### Divisors of 2745

• Number of divisors d(n): 12
• Complete list of divisors:
• Sum of all divisors σ(n): 4836
• Sum of proper divisors (its aliquot sum) s(n): 2091
• 2745 is a deficient number, because the sum of its proper divisors (2091) is less than itself. Its deficiency is 654

### Bases of 2745

• Binary: 1010101110012
• Base-36: 249

### Squares and roots of 2745

• 2745 squared (27452) is 7535025
• 2745 cubed (27453) is 20683643625
• The square root of 2745 is 52.3927475897
• The cube root of 2745 is 14.0017004737

### Scales and comparisons

How big is 2745?
• 2,745 seconds is equal to 45 minutes, 45 seconds.
• To count from 1 to 2,745 would take you about forty-five 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 2745 cubic inches would be around 1.2 feet tall.

### Recreational maths with 2745

• 2745 backwards is 5472
• The number of decimal digits it has is: 4
• The sum of 2745's digits is 18
• More coming soon!