428304 has 20 divisors (see below), whose sum is σ = 1106576. Its totient is φ = 142752.

The previous prime is 428303. The next prime is 428339. The reversal of 428304 is 403824.

428304 = T₃₀₄ + T₃₀₅ + ... + T₃₁₂.

It is a happy number.

428304 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (428303) 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, 4414 + ... + 4509.

2⁴²⁸³⁰⁴ is an apocalyptic number.

It is an amenable number.

428304 is an abundant number, since it is smaller than the sum of its proper divisors (678272).

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

428304 is a wasteful number, since it uses less digits than its factorization.

428304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8934 (or 8928 counting only the distinct ones).

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

The square root of 428304 is about 654.4493868895. The cubic root of 428304 is about 75.3790587431.

The spelling of 428304 in words is "four hundred twenty-eight thousand, three hundred four".