# 7428

## 7,428 is an even composite number composed of three prime numbers multiplied together.

What does the number 7428 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 12 divisors.

7428 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.

## Prime factorization of 7428:

### 22 × 3 × 619

(2 × 2 × 3 × 619)

See below for interesting mathematical facts about the number 7428 from the Numbermatics database.

### Names of 7428

• Cardinal: 7428 can be written as Seven thousand, four hundred twenty-eight.

### Scientific notation

• Scientific notation: 7.428 × 103

### Factors of 7428

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 624

### Divisors of 7428

• Number of divisors d(n): 12
• Complete list of divisors:
• Sum of all divisors σ(n): 17360
• Sum of proper divisors (its aliquot sum) s(n): 9932
• 7428 is an abundant number, because the sum of its proper divisors (9932) is greater than itself. Its abundance is 2504

### Bases of 7428

• Binary: 11101000001002
• Base-36: 5QC

### Squares and roots of 7428

• 7428 squared (74282) is 55175184
• 7428 cubed (74283) is 409841266752
• The square root of 7428 is 86.1858457057
• The cube root of 7428 is 19.5114988065

### Scales and comparisons

How big is 7428?
• 7,428 seconds is equal to 2 hours, 3 minutes, 48 seconds.
• To count from 1 to 7,428 would take you about two 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 7428 cubic inches would be around 1.6 feet tall.

### Recreational maths with 7428

• 7428 backwards is 8247
• The number of decimal digits it has is: 4
• The sum of 7428's digits is 21
• More coming soon!