278496 has 36 divisors (see below), whose sum is σ = 792792. Its totient is φ = 92736.

The previous prime is 278491. The next prime is 278497. The reversal of 278496 is 694872.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 278496.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 278496.

It is not an unprimeable number, because it can be changed into a prime (278491) by changing a digit.

278496 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 196 + ... + 771.

It is an arithmetic number, because the mean of its divisors is an integer number (22022).

2²⁷⁸⁴⁹⁶ is an apocalyptic number.

It is an amenable number.

278496 is an abundant number, since it is smaller than the sum of its proper divisors (514296).

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

278496 is a wasteful number, since it uses less digits than its factorization.

278496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983 (or 972 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 278496 is about 527.7272022551. The cubic root of 278496 is about 65.3039805207.

The spelling of 278496 in words is "two hundred seventy-eight thousand, four hundred ninety-six".