# 722

## 722 is an even composite number composed of two prime numbers multiplied together.

What does the number 722 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 6 divisors.

722 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of six divisors.

## Prime factorization of 722:

### 2 × 192

(2 × 19 × 19)

See below for interesting mathematical facts about the number 722 from the Numbermatics database.

### Names of 722

• Cardinal: 722 can be written as Seven hundred twenty-two.

### Scientific notation

• Scientific notation: 7.22 × 102

### Factors of 722

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 21

### Divisors of 722

• Number of divisors d(n): 6
• Complete list of divisors:
• Sum of all divisors σ(n): 1143
• Sum of proper divisors (its aliquot sum) s(n): 421
• 722 is a deficient number, because the sum of its proper divisors (421) is less than itself. Its deficiency is 301

### Bases of 722

• Binary: 10110100102
• Base-36: K2

### Squares and roots of 722

• 722 squared (7222) is 521284
• 722 cubed (7223) is 376367048
• The square root of 722 is 26.8700576851
• The cube root of 722 is 8.9711007185

### Scales and comparisons

How big is 722?
• 722 seconds is equal to 12 minutes, 2 seconds.
• To count from 1 to 722 would take you about six minutes.

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 722 cubic inches would be around 0.7 feet tall.

### Recreational maths with 722

• 722 backwards is 227
• The number of decimal digits it has is: 3
• The sum of 722's digits is 11
• More coming soon!