428775804 has 36 divisors (see below), whose sum is σ = 1085198296. Its totient is φ = 142747488.

The previous prime is 428775803. The next prime is 428775889. The reversal of 428775804 is 408577824.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 428775804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428775803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23727 + ... + 37689.

Almost surely, 2^428775804 is an apocalyptic number.

It is an amenable number.

428775804 is an abundant number, since it is smaller than the sum of its proper divisors (656422492).

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

428775804 is a wasteful number, since it uses less digits than its factorization.

428775804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14826 (or 14821 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 45.

The square root of 428775804 is about 20706.9023274849. The cubic root of 428775804 is about 754.0672685635.

The spelling of 428775804 in words is "four hundred twenty-eight million, seven hundred seventy-five thousand, eight hundred four".