# 747

## 747 is an odd composite number composed of two prime numbers multiplied together.

What does the number 747 look like?

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

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

## Prime factorization of 747:

### 32 × 83

(3 × 3 × 83)

See below for interesting mathematical facts about the number 747 from the Numbermatics database.

### Names of 747

• Cardinal: 747 can be written as Seven hundred forty-seven.

### Scientific notation

• Scientific notation: 7.47 × 102

### Factors of 747

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 86

### Divisors of 747

• Number of divisors d(n): 6
• Complete list of divisors:
• Sum of all divisors σ(n): 1092
• Sum of proper divisors (its aliquot sum) s(n): 345
• 747 is a deficient number, because the sum of its proper divisors (345) is less than itself. Its deficiency is 402

### Bases of 747

• Binary: 10111010112
• Base-36: KR

### Squares and roots of 747

• 747 squared (7472) is 558009
• 747 cubed (7473) is 416832723
• The square root of 747 is 27.3313007375
• The cube root of 747 is 9.0734726387

### Scales and comparisons

How big is 747?
• 747 seconds is equal to 12 minutes, 27 seconds.
• To count from 1 to 747 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 747 cubic inches would be around 0.8 feet tall.

### Recreational maths with 747

• 747 is the same when its digits are reversed! That makes it a palindromic number.
• The number of decimal digits it has is: 3
• The sum of 747's digits is 18
• More coming soon!