# 402

## 402 is an even composite number composed of three prime numbers multiplied together.

What does the number 402 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 8 divisors.

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

## Prime factorization of 402:

### 2 × 3 × 67

See below for interesting mathematical facts about the number 402 from the Numbermatics database.

### Names of 402

• Cardinal: 402 can be written as Four hundred two.

### Scientific notation

• Scientific notation: 4.02 × 102

### Factors of 402

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 72

### Divisors of 402

• Number of divisors d(n): 8
• Complete list of divisors:
• Sum of all divisors σ(n): 816
• Sum of proper divisors (its aliquot sum) s(n): 414
• 402 is an abundant number, because the sum of its proper divisors (414) is greater than itself. Its abundance is 12

### Bases of 402

• Binary: 1100100102
• Base-36: B6

### Squares and roots of 402

• 402 squared (4022) is 161604
• 402 cubed (4023) is 64964808
• The square root of 402 is 20.0499376557
• The cube root of 402 is 7.3803226921

### Scales and comparisons

How big is 402?
• 402 seconds is equal to 6 minutes, 42 seconds.
• To count from 1 to 402 would take you about 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 402 cubic inches would be around 0.6 feet tall.

### Recreational maths with 402

• 402 backwards is 204
• 402 is a Harshad number.
• The number of decimal digits it has is: 3
• The sum of 402's digits is 6
• More coming soon!