904631328 has 120 divisors (see below), whose sum is σ = 2670031980. Its totient is φ = 300464640.

The previous prime is 904631327. The next prime is 904631341. The reversal of 904631328 is 823136409.

It can be written as a sum of positive squares in 2 ways, for example, as 814988304 + 89643024 = 28548^2 + 9468^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 904631292 and 904631301.

It is not an unprimeable number, because it can be changed into a prime (904631327) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1090818 + ... + 1091646.

Almost surely, 2^904631328 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 904631328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1335015990).

904631328 is an abundant number, since it is smaller than the sum of its proper divisors (1765400652).

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

904631328 is a wasteful number, since it uses less digits than its factorization.

904631328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272 (or 1255 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 904631328 is about 30077.0897528335. The cubic root of 904631328 is about 967.1426623399.

The spelling of 904631328 in words is "nine hundred four million, six hundred thirty-one thousand, three hundred twenty-eight".