# 100865

## 100,865 is an odd composite number composed of two prime numbers multiplied together.

What does the number 100865 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

100865 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

## Prime factorization of 100865:

### 5 × 20173

See below for interesting mathematical facts about the number 100865 from the Numbermatics database.

### Names of 100865

• Cardinal: 100865 can be written as One hundred thousand, eight hundred sixty-five.

### Scientific notation

• Scientific notation: 1.00865 × 105

### Factors of 100865

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 20178

### Divisors of 100865

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 121044
• Sum of proper divisors (its aliquot sum) s(n): 20179
• 100865 is a deficient number, because the sum of its proper divisors (20179) is less than itself. Its deficiency is 80686

### Bases of 100865

• Binary: 110001010000000012
• Base-36: 25TT

### Squares and roots of 100865

• 100865 squared (1008652) is 10173748225
• 100865 cubed (1008653) is 1026175114714625
• The square root of 100865 is 317.5925062089
• The cube root of 100865 is 46.5493367743

### Scales and comparisons

How big is 100865?
• 100,865 seconds is equal to 4 hours, 5 seconds.
• To count from 1 to 100,865 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 100865 cubic inches would be around 3.9 feet tall.

### Recreational maths with 100865

• 100865 backwards is 568001
• The number of decimal digits it has is: 6
• The sum of 100865's digits is 20
• More coming soon!