# 13689

## 13,689 is an odd composite number composed of two prime numbers multiplied together.

What does the number 13689 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 15 divisors.

13689 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of fifteen divisors.

## Prime factorization of 13689:

### 34 × 132

(3 × 3 × 3 × 3 × 13 × 13)

See below for interesting mathematical facts about the number 13689 from the Numbermatics database.

### Names of 13689

• Cardinal: 13689 can be written as Thirteen thousand, six hundred eighty-nine.

### Scientific notation

• Scientific notation: 1.3689 × 104

### Factors of 13689

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 16

### Divisors of 13689

• Number of divisors d(n): 15
• Complete list of divisors:
• Sum of all divisors σ(n): 22143
• Sum of proper divisors (its aliquot sum) s(n): 8454
• 13689 is a deficient number, because the sum of its proper divisors (8454) is less than itself. Its deficiency is 5235

### Bases of 13689

• Binary: 110101011110012
• Base-36: AK9

### Squares and roots of 13689

• 13689 squared (136892) is 187388721
• 13689 cubed (136893) is 2565164201769
• 13689 is a perfect square number. Its square root is 117
• The cube root of 13689 is 23.9216192981

### Scales and comparisons

How big is 13689?
• 13,689 seconds is equal to 3 hours, 48 minutes, 9 seconds.
• To count from 1 to 13,689 would take you about three 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 13689 cubic inches would be around 2 feet tall.

### Recreational maths with 13689

• 13689 backwards is 98631
• 13689 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 13689's digits is 27
• More coming soon!