The number 278 is an integer that follows 277 and precedes 279. It is an even number, meaning it can be divided by 2 without leaving a remainder. In mathematics, 278 can be expressed as the sum of two prime numbers, specifically 139 and 139. In terms of its properties, 278 is not a prime number, as it has divisors other than 1 and itself. The factors of 278 include 1, 2, 139, and 278. This number can also be represented in various numeral systems, such as binary (100010110) and hexadecimal (116).