# 20191

## 20,191 is an odd composite number composed of two prime numbers multiplied together.

What does the number 20191 look like?

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

20191 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 20191:

### 61 × 331

See below for interesting mathematical facts about the number 20191 from the Numbermatics database.

### Names of 20191

• Cardinal: 20191 can be written as Twenty thousand, one hundred ninety-one.

### Scientific notation

• Scientific notation: 2.0191 × 104

### Factors of 20191

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 392

### Divisors of 20191

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 20584
• Sum of proper divisors (its aliquot sum) s(n): 393
• 20191 is a deficient number, because the sum of its proper divisors (393) is less than itself. Its deficiency is 19798

### Bases of 20191

• Binary: 1001110110111112
• Base-36: FKV

### Squares and roots of 20191

• 20191 squared (201912) is 407676481
• 20191 cubed (201913) is 8231395827871
• The square root of 20191 is 142.0950386185
• The cube root of 20191 is 27.2303115083

### Scales and comparisons

How big is 20191?
• 20,191 seconds is equal to 5 hours, 36 minutes, 31 seconds.
• To count from 1 to 20,191 would take you about five hours.

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 20191 cubic inches would be around 2.3 feet tall.

### Recreational maths with 20191

• 20191 backwards is 19102
• The number of decimal digits it has is: 5
• The sum of 20191's digits is 13
• More coming soon!

MLA style:
"Number 20191 - Facts about the integer". Numbermatics.com. 2022. Web. 2 July 2022.

APA style:
Numbermatics. (2022). Number 20191 - Facts about the integer. Retrieved 2 July 2022, from https://numbermatics.com/n/20191/

Chicago style:
Numbermatics. 2022. "Number 20191 - Facts about the integer". https://numbermatics.com/n/20191/

The information we have on file for 20191 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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