2170

2170 is a natural number that lies between 2169 and 2171. It is even and composite. The prime factorization of 2170 is 2 × 5 × 7 × 31, so its divisors include 1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 155, 217, 310, 434, and 2170, among others; in total it has 16 positive divisors. The sum of its digits is 2+1+7+0 = 10, giving a digital root of 1. In various numeral systems, 2170 is represented as: binary 100001111010, octal 4172, decimal 2170, hexadecimal 0x87A, and Roman numeral MMCLXX.

In the Gregorian calendar, 2170 CE would be a year in the 22nd century; as with any far-future year, historical events are speculative and not documented in standard records.

The number 2170 is used in mathematical contexts and as an identifier in catalogs or indexing schemes, but there is no single widely recognized meaning associated with it beyond its numerical properties.