904409928 has 128 divisors (see below), whose sum is σ = 2698272000. Its totient is φ = 279659520.

The previous prime is 904409917. The next prime is 904409929. The reversal of 904409928 is 829904409.

It is not an unprimeable number, because it can be changed into a prime (904409929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 258978 + ... + 262446.

It is an arithmetic number, because the mean of its divisors is an integer number (21080250).

Almost surely, 2^904409928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 904409928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1349136000).

904409928 is an abundant number, since it is smaller than the sum of its proper divisors (1793862072).

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

904409928 is a wasteful number, since it uses less digits than its factorization.

904409928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3572 (or 3562 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 904409928 is about 30073.4089853478. The cubic root of 904409928 is about 967.0637562156.

The spelling of 904409928 in words is "nine hundred four million, four hundred nine thousand, nine hundred twenty-eight".