# 28901

## 28,901 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 28901 look like?

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

28901 is a prime number. Like all primes (except two), it is an odd number.

## Prime factorization of 28901:

### 28901

See below for interesting mathematical facts about the number 28901 from the Numbermatics database.

### Names of 28901

• Cardinal: 28901 can be written as Twenty-eight thousand, nine hundred one.

### Scientific notation

• Scientific notation: 2.8901 × 104

### Factors of 28901

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 28901

### Divisors of 28901

• Number of divisors d(n): 2
• Complete list of divisors:
• Sum of all divisors σ(n): 28902
• Sum of proper divisors (its aliquot sum) s(n): 1
• 28901 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 28900

### Bases of 28901

• Binary: 1110000111001012
• Base-36: MAT

### Squares and roots of 28901

• 28901 squared (289012) is 835267801
• 28901 cubed (289013) is 24140074716701
• The square root of 28901 is 170.0029411511
• The cube root of 28901 is 30.6881675515

### Scales and comparisons

How big is 28901?
• 28,901 seconds is equal to 8 hours, 1 minute, 41 seconds.
• To count from 1 to 28,901 would take you about eight 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 28901 cubic inches would be around 2.6 feet tall.

### Recreational maths with 28901

• 28901 backwards is 10982
• The number of decimal digits it has is: 5
• The sum of 28901's digits is 20
• More coming soon!