# 16891

## 16,891 is an odd composite number composed of three prime numbers multiplied together.

What does the number 16891 look like?

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

16891 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 16891:

### 7 × 19 × 127

See below for interesting mathematical facts about the number 16891 from the Numbermatics database.

### Names of 16891

• Cardinal: 16891 can be written as Sixteen thousand, eight hundred ninety-one.

### Scientific notation

• Scientific notation: 1.6891 × 104

### Factors of 16891

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 153

### Divisors of 16891

• Number of divisors d(n): 8
• Complete list of divisors:
• Sum of all divisors σ(n): 20480
• Sum of proper divisors (its aliquot sum) s(n): 3589
• 16891 is a deficient number, because the sum of its proper divisors (3589) is less than itself. Its deficiency is 13302

### Bases of 16891

• Binary: 1000001111110112
• Base-36: D17

### Squares and roots of 16891

• 16891 squared (168912) is 285305881
• 16891 cubed (168913) is 4819101635971
• The square root of 16891 is 129.9653800056
• The cube root of 16891 is 25.6577431921

### Scales and comparisons

How big is 16891?
• 16,891 seconds is equal to 4 hours, 41 minutes, 31 seconds.
• To count from 1 to 16,891 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 16891 cubic inches would be around 2.1 feet tall.

### Recreational maths with 16891

• 16891 backwards is 19861
• The number of decimal digits it has is: 5
• The sum of 16891's digits is 25
• More coming soon!