638024 has 16 divisors (see below), whose sum is σ = 1205820. Its totient is φ = 316480.

The previous prime is 638023. The next prime is 638047. The reversal of 638024 is 420836.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 624100 + 13924 = 790^2 + 118^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 638024.

It is not an unprimeable number, because it can be changed into a prime (638023) 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, 1154 + ... + 1614.

2⁶³⁸⁰²⁴ is an apocalyptic number.

It is an amenable number.

638024 is a deficient number, since it is larger than the sum of its proper divisors (567796).

638024 is a wasteful number, since it uses less digits than its factorization.

638024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640 (or 636 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 638024 is about 798.7640452599. The cubic root of 638024 is about 86.0886052719.

The spelling of 638024 in words is "six hundred thirty-eight thousand, twenty-four".