304428 has 24 divisors (see below), whose sum is σ = 741888. Its totient is φ = 96976.

The previous prime is 304417. The next prime is 304429. The reversal of 304428 is 824403.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (304429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276 + ... + 827.

It is an arithmetic number, because the mean of its divisors is an integer number (30912).

2³⁰⁴⁴²⁸ is an apocalyptic number.

It is an amenable number.

304428 is an abundant number, since it is smaller than the sum of its proper divisors (437460).

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

304428 is a wasteful number, since it uses less digits than its factorization.

304428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133 (or 1131 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 304428 is about 551.7499433620. The cubic root of 304428 is about 67.2710487219.

The spelling of 304428 in words is "three hundred four thousand, four hundred twenty-eight".