# 72813

## 72,813 is an odd composite number composed of three prime numbers multiplied together.

What does the number 72813 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 8 divisors.

72813 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.

## Prime factorization of 72813:

### 3 × 13 × 1867

See below for interesting mathematical facts about the number 72813 from the Numbermatics database.

### Names of 72813

• Cardinal: 72813 can be written as Seventy-two thousand, eight hundred thirteen.

### Scientific notation

• Scientific notation: 7.2813 × 104

### Factors of 72813

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 1883

### Divisors of 72813

• Number of divisors d(n): 8
• Complete list of divisors:
• Sum of all divisors σ(n): 104608
• Sum of proper divisors (its aliquot sum) s(n): 31795
• 72813 is a deficient number, because the sum of its proper divisors (31795) is less than itself. Its deficiency is 41018

### Bases of 72813

• Binary: 100011100011011012
• Base-36: 1K6L

### Squares and roots of 72813

• 72813 squared (728132) is 5301732969
• 72813 cubed (728133) is 386035082671797
• The square root of 72813 is 269.8388407919
• The cube root of 72813 is 41.7576748533

### Scales and comparisons

How big is 72813?
• 72,813 seconds is equal to 20 hours, 13 minutes, 33 seconds.
• To count from 1 to 72,813 would take you about twenty 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 72813 cubic inches would be around 3.5 feet tall.

### Recreational maths with 72813

• 72813 backwards is 31827
• The number of decimal digits it has is: 5
• The sum of 72813's digits is 21
• More coming soon!