304028 has 18 divisors (see below), whose sum is σ = 567336. Its totient is φ = 142528.

The previous prime is 304021. The next prime is 304033. The reversal of 304028 is 820403.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 303997 and 304015.

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 304028.

It is not an unprimeable number, because it can be changed into a prime (304021) by changing a digit.

304028 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, 1025 + ... + 1287.

2³⁰⁴⁰²⁸ is an apocalyptic number.

It is an amenable number.

304028 is a deficient number, since it is larger than the sum of its proper divisors (263308).

304028 is a wasteful number, since it uses less digits than its factorization.

304028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 304028 is about 551.3873411677. The cubic root of 304028 is about 67.2415724435.

The spelling of 304028 in words is "three hundred four thousand, twenty-eight".