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220

**220**

**Definition:**
220 is a natural number following 219 and preceding 221. It is an even composite number with several interesting mathematical properties.

**Article**

### Mathematical Properties
220 is a composite number with the prime factorization 2² × 5 × 11. It has a total of 12 divisors: 1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, and 220. The sum of its proper divisors is 284, making 220 part of the smallest pair of amicable numbers (220 and 284).

### Cultural and Practical Significance
In electrical systems, 220 volts is a common voltage standard used in many countries for residential and commercial power supply. The number 220 also appears in various contexts such as measurements, addresses, and identification codes.

**Meta Description:**
220 is an even composite number known for its role in the smallest amicable pair and as a common electrical voltage standard. It has diverse applications in mathematics and everyday life.