634904328 has 64 divisors (see below), whose sum is σ = 1681090560. Its totient is φ = 199400256.

The previous prime is 634904327. The next prime is 634904353. The reversal of 634904328 is 823409436.

It is not an unprimeable number, because it can be changed into a prime (634904327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28401 + ... + 45567.

It is an arithmetic number, because the mean of its divisors is an integer number (26267040).

Almost surely, 2^634904328 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 634904328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (840545280).

634904328 is an abundant number, since it is smaller than the sum of its proper divisors (1046186232).

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

634904328 is a wasteful number, since it uses less digits than its factorization.

634904328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17266 (or 17262 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 634904328 is about 25197.3079514459. The cubic root of 634904328 is about 859.4806346719.

The spelling of 634904328 in words is "six hundred thirty-four million, nine hundred four thousand, three hundred twenty-eight".