404528928 has 24 divisors (see below), whose sum is σ = 1061888688. Its totient is φ = 134842944.

The previous prime is 404528921. The next prime is 404528933. The reversal of 404528928 is 829825404.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 404528928.

It is not an unprimeable number, because it can be changed into a prime (404528921) 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, 2106826 + ... + 2107017.

It is an arithmetic number, because the mean of its divisors is an integer number (44245362).

Almost surely, 2^404528928 is an apocalyptic number.

404528928 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

404528928 is an abundant number, since it is smaller than the sum of its proper divisors (657359760).

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

404528928 is a wasteful number, since it uses less digits than its factorization.

404528928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4213856 (or 4213848 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 404528928 is about 20112.9045142665. The cubic root of 404528928 is about 739.5766558357.

The spelling of 404528928 in words is "four hundred four million, five hundred twenty-eight thousand, nine hundred twenty-eight".