# 1428

## 1,428 is an even composite number composed of four prime numbers multiplied together.

What does the number 1428 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 24 divisors.

1428 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of twenty-four divisors.

## Prime factorization of 1428:

### 22 × 3 × 7 × 17

(2 × 2 × 3 × 7 × 17)

See below for interesting mathematical facts about the number 1428 from the Numbermatics database.

### Names of 1428

• Cardinal: 1428 can be written as One thousand, four hundred twenty-eight.

### Scientific notation

• Scientific notation: 1.428 × 103

### Factors of 1428

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 29

### Divisors of 1428

• Number of divisors d(n): 24
• Complete list of divisors:
• Sum of all divisors σ(n): 4032
• Sum of proper divisors (its aliquot sum) s(n): 2604
• 1428 is an abundant number, because the sum of its proper divisors (2604) is greater than itself. Its abundance is 1176

### Bases of 1428

• Binary: 101100101002
• Base-36: 13O

### Squares and roots of 1428

• 1428 squared (14282) is 2039184
• 1428 cubed (14283) is 2911954752
• The square root of 1428 is 37.7888872553
• The cube root of 1428 is 11.2609769405

### Scales and comparisons

How big is 1428?
• 1,428 seconds is equal to 23 minutes, 48 seconds.
• To count from 1 to 1,428 would take you about twenty-three 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 1428 cubic inches would be around 0.9 feet tall.

### Recreational maths with 1428

• 1428 backwards is 8241
• The number of decimal digits it has is: 4
• The sum of 1428's digits is 15
• More coming soon!