634809328 has 20 divisors (see below), whose sum is σ = 1230377848. Its totient is φ = 317292480.

The previous prime is 634809317. The next prime is 634809349. The reversal of 634809328 is 823908436.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 57850 + ... + 67942.

Almost surely, 2^634809328 is an apocalyptic number.

It is an amenable number.

634809328 is a deficient number, since it is larger than the sum of its proper divisors (595568520).

634809328 is a wasteful number, since it uses less digits than its factorization.

634809328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14032 (or 14026 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 634809328 is about 25195.4227589060. The cubic root of 634809328 is about 859.4377648360.

The spelling of 634809328 in words is "six hundred thirty-four million, eight hundred nine thousand, three hundred twenty-eight".