638048 has 24 divisors (see below), whose sum is σ = 1274112. Its totient is φ = 314496.

The previous prime is 638047. The next prime is 638051. The reversal of 638048 is 840836.

It is a self number, because there is not a number n which added to its sum of digits gives 638048.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 638048.

It is not an unprimeable number, because it can be changed into a prime (638047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3986 + ... + 4142.

It is an arithmetic number, because the mean of its divisors is an integer number (53088).

2⁶³⁸⁰⁴⁸ is an apocalyptic number.

It is an amenable number.

638048 is a deficient number, since it is larger than the sum of its proper divisors (636064).

638048 is a wasteful number, since it uses less digits than its factorization.

638048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 286 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 638048 is about 798.7790683287. The cubic root of 638048 is about 86.0896846987.

The spelling of 638048 in words is "six hundred thirty-eight thousand, forty-eight".