# 1220

## 1,220 is an even composite number composed of three prime numbers multiplied together.

What does the number 1220 look like?

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

1220 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 1220:

### 22 × 5 × 61

(2 × 2 × 5 × 61)

See below for interesting mathematical facts about the number 1220 from the Numbermatics database.

### Names of 1220

• Cardinal: 1220 can be written as One thousand, two hundred twenty.

### Scientific notation

• Scientific notation: 1.22 × 103

### Factors of 1220

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 68

### Divisors of 1220

• Number of divisors d(n): 12
• Complete list of divisors:
• Sum of all divisors σ(n): 2604
• Sum of proper divisors (its aliquot sum) s(n): 1384
• 1220 is an abundant number, because the sum of its proper divisors (1384) is greater than itself. Its abundance is 164

### Bases of 1220

• Binary: 100110001002
• Base-36: XW

### Squares and roots of 1220

• 1220 squared (12202) is 1488400
• 1220 cubed (12203) is 1815848000
• The square root of 1220 is 34.9284983931
• The cube root of 1220 is 10.6852973015

### Scales and comparisons

How big is 1220?
• 1,220 seconds is equal to 20 minutes, 20 seconds.
• To count from 1 to 1,220 would take you about twenty 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 1220 cubic inches would be around 0.9 feet tall.

### Recreational maths with 1220

• 1220 backwards is 0221
• 1220 is a Harshad number.
• The number of decimal digits it has is: 4
• The sum of 1220's digits is 5
• More coming soon!