634134920 has 16 divisors (see below), whose sum is σ = 1426803660. Its totient is φ = 253653952.

The previous prime is 634134913. The next prime is 634134931. The reversal of 634134920 is 29431436.

It can be written as a sum of positive squares in 2 ways, for example, as 593507044 + 40627876 = 24362^2 + 6374^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7926647 + ... + 7926726.

Almost surely, 2^634134920 is an apocalyptic number.

It is an amenable number.

634134920 is an abundant number, since it is smaller than the sum of its proper divisors (792668740).

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

634134920 is a wasteful number, since it uses less digits than its factorization.

634134920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15853384 (or 15853380 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 634134920 is about 25182.0356603671. The cubic root of 634134920 is about 859.1333074945.

The spelling of 634134920 in words is "six hundred thirty-four million, one hundred thirty-four thousand, nine hundred twenty".