278798 has 8 divisors (see below), whose sum is σ = 450408. Its totient is φ = 128664.

The previous prime is 278767. The next prime is 278801. The reversal of 278798 is 897872.

It is a sphenic number, since it is the product of 3 distinct primes.

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 278798.

It is an unprimeable number.

278798 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 3 ways as a sum of consecutive naturals, for example, 5336 + ... + 5387.

It is an arithmetic number, because the mean of its divisors is an integer number (56301).

2²⁷⁸⁷⁹⁸ is an apocalyptic number.

278798 is a deficient number, since it is larger than the sum of its proper divisors (171610).

278798 is a wasteful number, since it uses less digits than its factorization.

278798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10738.

The product of its digits is 56448, while the sum is 41.

The square root of 278798 is about 528.0132574093. The cubic root of 278798 is about 65.3275771226.

The spelling of 278798 in words is "two hundred seventy-eight thousand, seven hundred ninety-eight".