# 2156

## 2,156 is an even composite number composed of three prime numbers multiplied together.

What does the number 2156 look like?

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

2156 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 2156:

### 22 × 72 × 11

(2 × 2 × 7 × 7 × 11)

See below for interesting mathematical facts about the number 2156 from the Numbermatics database.

### Names of 2156

• Cardinal: 2156 can be written as Two thousand, one hundred fifty-six.

### Scientific notation

• Scientific notation: 2.156 × 103

### Factors of 2156

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 20

### Divisors of 2156

• Number of divisors d(n): 18
• Complete list of divisors:
• Sum of all divisors σ(n): 4788
• Sum of proper divisors (its aliquot sum) s(n): 2632
• 2156 is an abundant number, because the sum of its proper divisors (2632) is greater than itself. Its abundance is 476

### Bases of 2156

• Binary: 1000011011002
• Base-36: 1NW

### Squares and roots of 2156

• 2156 squared (21562) is 4648336
• 2156 cubed (21563) is 10021812416
• The square root of 2156 is 46.4327470649
• The cube root of 2156 is 12.9186238219

### Scales and comparisons

How big is 2156?
• 2,156 seconds is equal to 35 minutes, 56 seconds.
• To count from 1 to 2,156 would take you about thirty-five 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 2156 cubic inches would be around 1.1 feet tall.

### Recreational maths with 2156

• 2156 backwards is 6512
• 2156 is a Harshad number.
• The number of decimal digits it has is: 4
• The sum of 2156's digits is 14
• More coming soon!