# 2891

## 2,891 is an odd composite number composed of two prime numbers multiplied together.

What does the number 2891 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 6 divisors.

2891 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of six divisors.

## Prime factorization of 2891:

### 72 × 59

(7 × 7 × 59)

See below for interesting mathematical facts about the number 2891 from the Numbermatics database.

### Names of 2891

• Cardinal: 2891 can be written as Two thousand, eight hundred ninety-one.

### Scientific notation

• Scientific notation: 2.891 × 103

### Factors of 2891

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 66

### Divisors of 2891

• Number of divisors d(n): 6
• Complete list of divisors:
• Sum of all divisors σ(n): 3420
• Sum of proper divisors (its aliquot sum) s(n): 529
• 2891 is a deficient number, because the sum of its proper divisors (529) is less than itself. Its deficiency is 2362

### Bases of 2891

• Binary: 1011010010112
• Hexadecimal: 0xB4B
• Base-36: 28B

### Squares and roots of 2891

• 2891 squared (28912) is 8357881
• 2891 cubed (28913) is 24162633971
• The square root of 2891 is 53.7680202351
• The cube root of 2891 is 14.2456640137

### Scales and comparisons

How big is 2891?
• 2,891 seconds is equal to 48 minutes, 11 seconds.
• To count from 1 to 2,891 would take you about forty-eight 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 2891 cubic inches would be around 1.2 feet tall.

### Recreational maths with 2891

• 2891 backwards is 1982
• The number of decimal digits it has is: 4
• The sum of 2891's digits is 20
• More coming soon!

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The information we have on file for 2891 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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