# 78901

## 78,901 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 78901 look like?

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

78901 is a prime number. Like all primes (except two), it is an odd number.

## Prime factorization of 78901:

### 78901

See below for interesting mathematical facts about the number 78901 from the Numbermatics database.

### Names of 78901

• Cardinal: 78901 can be written as Seventy-eight thousand, nine hundred one.

### Scientific notation

• Scientific notation: 7.8901 × 104

### Factors of 78901

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 78901

### Divisors of 78901

• Number of divisors d(n): 2
• Complete list of divisors:
• Sum of all divisors σ(n): 78902
• Sum of proper divisors (its aliquot sum) s(n): 1
• 78901 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 78900

### Bases of 78901

• Binary: 100110100001101012
• Base-36: 1OVP

### Squares and roots of 78901

• 78901 squared (789012) is 6225367801
• 78901 cubed (789013) is 491187744866701
• The square root of 78901 is 280.8932181453
• The cube root of 78901 is 42.8904730141

### Scales and comparisons

How big is 78901?
• 78,901 seconds is equal to 21 hours, 55 minutes, 1 second.
• To count from 1 to 78,901 would take you about twenty-one 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 78901 cubic inches would be around 3.6 feet tall.

### Recreational maths with 78901

• 78901 backwards is 10987
• The number of decimal digits it has is: 5
• The sum of 78901's digits is 25
• More coming soon!