428905904 has 40 divisors (see below), whose sum is σ = 950772480. Its totient is φ = 183613248.

The previous prime is 428905891. The next prime is 428905907. The reversal of 428905904 is 409509824.

It is not an unprimeable number, because it can be changed into a prime (428905907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144467 + ... + 147405.

It is an arithmetic number, because the mean of its divisors is an integer number (23769312).

Almost surely, 2^428905904 is an apocalyptic number.

It is an amenable number.

428905904 is an abundant number, since it is smaller than the sum of its proper divisors (521866576).

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

428905904 is a wasteful number, since it uses less digits than its factorization.

428905904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4257 (or 4251 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 428905904 is about 20710.0435537929. The cubic root of 428905904 is about 754.1435277104.

The spelling of 428905904 in words is "four hundred twenty-eight million, nine hundred five thousand, nine hundred four".