638714048 has 56 divisors (see below), whose sum is σ = 1511515392. Its totient is φ = 261828864.

The previous prime is 638714039. The next prime is 638714053. The reversal of 638714048 is 840417836.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×638714048² = 815911270225092608, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 638713996 and 638714014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20690 + ... + 41297.

Almost surely, 2^638714048 is an apocalyptic number.

It is an amenable number.

638714048 is an abundant number, since it is smaller than the sum of its proper divisors (872801344).

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

638714048 is a wasteful number, since it uses less digits than its factorization.

638714048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62029 (or 62019 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 638714048 is about 25272.7926434733. The cubic root of 638714048 is about 861.1963015834.

The spelling of 638714048 in words is "six hundred thirty-eight million, seven hundred fourteen thousand, forty-eight".