304978 has 8 divisors (see below), whose sum is σ = 472320. Its totient is φ = 147540.

The previous prime is 304961. The next prime is 304979. The reversal of 304978 is 879403.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (304979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2398 + ... + 2521.

It is an arithmetic number, because the mean of its divisors is an integer number (59040).

2³⁰⁴⁹⁷⁸ is an apocalyptic number.

304978 is a deficient number, since it is larger than the sum of its proper divisors (167342).

304978 is a wasteful number, since it uses less digits than its factorization.

304978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4952.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 304978 is about 552.2481326360. The cubic root of 304978 is about 67.3115364754.

The spelling of 304978 in words is "three hundred four thousand, nine hundred seventy-eight".