# 128717

## 128,717 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 128717 look like?

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

128717 is a prime number. Like all primes (except two), it is an odd number.

## Prime factorization of 128717:

### 128717

See below for interesting mathematical facts about the number 128717 from the Numbermatics database.

### Names of 128717

• Cardinal: 128717 can be written as One hundred twenty-eight thousand, seven hundred seventeen.

### Scientific notation

• Scientific notation: 1.28717 × 105

### Factors of 128717

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 128717

### Divisors of 128717

• Number of divisors d(n): 2
• Complete list of divisors:
• Sum of all divisors σ(n): 128718
• Sum of proper divisors (its aliquot sum) s(n): 1
• 128717 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 128716

### Bases of 128717

• Binary: 111110110110011012
• Base-36: 2RBH

### Squares and roots of 128717

• 128717 squared (1287172) is 16568066089
• 128717 cubed (1287173) is 2132591762777813
• The square root of 128717 is 358.7715150343
• The cube root of 128717 is 50.4907671909

### Scales and comparisons

How big is 128717?
• 128,717 seconds is equal to 1 day, 11 hours, 45 minutes, 17 seconds.
• To count from 1 to 128,717 would take you about eleven 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 128717 cubic inches would be around 4.2 feet tall.

### Recreational maths with 128717

• 128717 backwards is 717821
• The number of decimal digits it has is: 6
• The sum of 128717's digits is 26
• More coming soon!