528404 has 12 divisors (see below), whose sum is σ = 940800. Its totient is φ = 259608.

The previous prime is 528403. The next prime is 528413. The reversal of 528404 is 404825.

It is a self number, because there is not a number n which added to its sum of digits gives 528404.

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 528404.

It is not an unprimeable number, because it can be changed into a prime (528401) 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, 884 + ... + 1355.

It is an arithmetic number, because the mean of its divisors is an integer number (78400).

2⁵²⁸⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

528404 is a deficient number, since it is larger than the sum of its proper divisors (412396).

528404 is a wasteful number, since it uses less digits than its factorization.

528404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2302 (or 2300 counting only the distinct ones).

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

The square root of 528404 is about 726.9140251777. The cubic root of 528404 is about 80.8454095631.

It can be divided in two parts, 528 and 404, that multiplied together give a palindrome (213312).

The spelling of 528404 in words is "five hundred twenty-eight thousand, four hundred four".