# 16981

## 16,981 is a prime number. Like all primes greater than two, it is odd and has no factors apart from itself and one.

What does the number 16981 look like?

As a prime, it is not composed of any other numbers and has no internal structure.

16981 is a prime number. Like all primes (except two), it is an odd number.

## Prime factorization of 16981:

### 16981

See below for interesting mathematical facts about the number 16981 from the Numbermatics database.

### Names of 16981

• Cardinal: 16981 can be written as Sixteen thousand, nine hundred eighty-one.

### Scientific notation

• Scientific notation: 1.6981 × 104

### Factors of 16981

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 16981

### Divisors of 16981

• Number of divisors d(n): 2
• Complete list of divisors:
• Sum of all divisors σ(n): 16982
• Sum of proper divisors (its aliquot sum) s(n): 1
• 16981 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 16980

### Bases of 16981

• Binary: 1000010010101012
• Base-36: D3P

### Squares and roots of 16981

• 16981 squared (169812) is 288354361
• 16981 cubed (169813) is 4896545404141
• The square root of 16981 is 130.3111660603
• The cube root of 16981 is 25.7032330513

### Scales and comparisons

How big is 16981?
• 16,981 seconds is equal to 4 hours, 43 minutes, 1 second.
• To count from 1 to 16,981 would take you about four 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 16981 cubic inches would be around 2.1 feet tall.

### Recreational maths with 16981

• 16981 backwards is 18961
• The number of decimal digits it has is: 5
• The sum of 16981's digits is 25
• More coming soon!

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"Number 16981 - Facts about the integer". Numbermatics.com. 2022. Web. 3 July 2022.

APA style:
Numbermatics. (2022). Number 16981 - Facts about the integer. Retrieved 3 July 2022, from https://numbermatics.com/n/16981/

Chicago style:
Numbermatics. 2022. "Number 16981 - Facts about the integer". https://numbermatics.com/n/16981/

The information we have on file for 16981 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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