# 8428

## 8,428 is an even composite number composed of three prime numbers multiplied together.

What does the number 8428 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 18 divisors.

8428 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eighteen divisors.

## Prime factorization of 8428:

### 22 × 72 × 43

(2 × 2 × 7 × 7 × 43)

See below for interesting mathematical facts about the number 8428 from the Numbermatics database.

### Names of 8428

• Cardinal: 8428 can be written as Eight thousand, four hundred twenty-eight.

### Scientific notation

• Scientific notation: 8.428 × 103

### Factors of 8428

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 52

### Divisors of 8428

• Number of divisors d(n): 18
• Complete list of divisors:
• Sum of all divisors σ(n): 17556
• Sum of proper divisors (its aliquot sum) s(n): 9128
• 8428 is an abundant number, because the sum of its proper divisors (9128) is greater than itself. Its abundance is 700

### Bases of 8428

• Binary: 100000111011002
• Base-36: 6I4

### Squares and roots of 8428

• 8428 squared (84282) is 71031184
• 8428 cubed (84283) is 598650818752
• The square root of 8428 is 91.8041393403
• The cube root of 8428 is 20.3504886723

### Scales and comparisons

How big is 8428?
• 8,428 seconds is equal to 2 hours, 20 minutes, 28 seconds.
• To count from 1 to 8,428 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 8428 cubic inches would be around 1.7 feet tall.

### Recreational maths with 8428

• 8428 backwards is 8248
• The number of decimal digits it has is: 4
• The sum of 8428's digits is 22
• More coming soon!