278976 has 28 divisors (see below), whose sum is σ = 738632. Its totient is φ = 92928.

The previous prime is 278947. The next prime is 278981. The reversal of 278976 is 679872.

278976 is nontrivially palindromic in base 13.

It is a congruent number.

It is an unprimeable number.

278976 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535 + ... + 918.

2²⁷⁸⁹⁷⁶ is an apocalyptic number.

It is an amenable number.

278976 is an abundant number, since it is smaller than the sum of its proper divisors (459656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

278976 is a wasteful number, since it uses less digits than its factorization.

278976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468 (or 1458 counting only the distinct ones).

The product of its digits is 42336, while the sum is 39.

The square root of 278976 is about 528.1817868878. The cubic root of 278976 is about 65.3414770727.

The spelling of 278976 in words is "two hundred seventy-eight thousand, nine hundred seventy-six".