428504 has 16 divisors (see below), whose sum is σ = 831600. Its totient is φ = 206752.

The previous prime is 428503. The next prime is 428509. The reversal of 428504 is 405824.

It is a self number, because there is not a number n which added to its sum of digits gives 428504.

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 428504.

It is not an unprimeable number, because it can be changed into a prime (428503) 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, 692 + ... + 1155.

It is an arithmetic number, because the mean of its divisors is an integer number (51975).

2⁴²⁸⁵⁰⁴ is an apocalyptic number.

It is an amenable number.

428504 is a deficient number, since it is larger than the sum of its proper divisors (403096).

428504 is a wasteful number, since it uses less digits than its factorization.

428504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1882 (or 1878 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 428504 is about 654.6021692601. The cubic root of 428504 is about 75.3907898701.

The spelling of 428504 in words is "four hundred twenty-eight thousand, five hundred four".