# 1345

## 1,345 is an odd composite number composed of two prime numbers multiplied together.

What does the number 1345 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

1345 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

## Prime factorization of 1345:

### 5 × 269

See below for interesting mathematical facts about the number 1345 from the Numbermatics database.

### Names of 1345

• Cardinal: 1345 can be written as One thousand, three hundred forty-five.

### Scientific notation

• Scientific notation: 1.345 × 103

### Factors of 1345

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 274

### Divisors of 1345

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 1620
• Sum of proper divisors (its aliquot sum) s(n): 275
• 1345 is a deficient number, because the sum of its proper divisors (275) is less than itself. Its deficiency is 1070

### Bases of 1345

• Binary: 101010000012
• Base-36: 11D

### Squares and roots of 1345

• 1345 squared (13452) is 1809025
• 1345 cubed (13453) is 2433138625
• The square root of 1345 is 36.6742416419
• The cube root of 1345 is 11.0384330549

### Scales and comparisons

How big is 1345?
• 1,345 seconds is equal to 22 minutes, 25 seconds.
• To count from 1 to 1,345 would take you about twenty-two 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 1345 cubic inches would be around 0.9 feet tall.

### Recreational maths with 1345

• 1345 backwards is 5431
• The number of decimal digits it has is: 4
• The sum of 1345's digits is 13
• More coming soon!

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"Number 1345 - Facts about the integer". Numbermatics.com. 2021. Web. 4 December 2021.

APA style:
Numbermatics. (2021). Number 1345 - Facts about the integer. Retrieved 4 December 2021, from https://numbermatics.com/n/1345/

Chicago style:
Numbermatics. 2021. "Number 1345 - Facts about the integer". https://numbermatics.com/n/1345/

The information we have on file for 1345 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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