# 2945

## 2,945 is an odd composite number composed of three prime numbers multiplied together.

What does the number 2945 look like?

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

2945 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 2945:

### 5 × 19 × 31

See below for interesting mathematical facts about the number 2945 from the Numbermatics database.

### Names of 2945

• Cardinal: 2945 can be written as Two thousand, nine hundred forty-five.

### Scientific notation

• Scientific notation: 2.945 × 103

### Factors of 2945

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

### Divisors of 2945

• Number of divisors d(n): 8
• Complete list of divisors:
• Sum of all divisors σ(n): 3840
• Sum of proper divisors (its aliquot sum) s(n): 895
• 2945 is a deficient number, because the sum of its proper divisors (895) is less than itself. Its deficiency is 2050

### Bases of 2945

• Binary: 1011100000012
• Base-36: 29T

### Squares and roots of 2945

• 2945 squared (29452) is 8673025
• 2945 cubed (29453) is 25542058625
• The square root of 2945 is 54.2678542049
• The cube root of 2945 is 14.3338140575

### Scales and comparisons

How big is 2945?
• 2,945 seconds is equal to 49 minutes, 5 seconds.
• To count from 1 to 2,945 would take you about forty-nine 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 2945 cubic inches would be around 1.2 feet tall.

### Recreational maths with 2945

• 2945 backwards is 5492
• The number of decimal digits it has is: 4
• The sum of 2945's digits is 20
• More coming soon!

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The information we have on file for 2945 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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