2168

2168 is a natural number that follows 2167 and precedes 2169. In the decimal system it is written as 2168. The number is even and composite, with prime factorization 2^3 × 271. Its proper divisors are 1, 2, 4, 8, 271, and 542, with 1084 and 2168 as the remaining divisors. It is not a prime, a square, or a cube. The sum of its digits is 17, so it is not divisible by 3 or 9.

In other bases, 2168 can be represented as 100001111000 in binary and as 0x878 in hexadecimal. In Roman numerals, 2168 is MMCLXVIII (2000 = MM, 100 = C, 60 = LX, 8 = VIII).

As a calendar year, 2168 AD falls within the 22nd century. It is a future year in the Common Era, and any specific historical events would be speculative unless tied to documented fiction or future projections.

In astronomy, numbers in the 2000s are commonly used to designate minor planets and other celestial objects. 2168 may appear as an identifier for a listed object, assigned in accordance with standard discovery and cataloging practices. The designation reflects its order in the sequence of confirmed discoveries, rather than implying a dedicated name or notable attributes without further designation.

In summary, 2168 is a composite even number with a simple prime factorization, distinct representations in multiple bases, and relevance as both a calendar year and a potential astronomical designation.