638052 has 12 divisors (see below), whose sum is σ = 1488816. Its totient is φ = 212680.

The previous prime is 638051. The next prime is 638059. The reversal of 638052 is 250836.

638052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×638052² = 814220709408, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (638051) 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, 26574 + ... + 26597.

It is an arithmetic number, because the mean of its divisors is an integer number (124068).

2⁶³⁸⁰⁵² is an apocalyptic number.

It is an amenable number.

638052 is an abundant number, since it is smaller than the sum of its proper divisors (850764).

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

638052 is a wasteful number, since it uses less digits than its factorization.

638052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53178 (or 53176 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 638052 is about 798.7815721460. The cubic root of 638052 is about 86.0898646006.

Adding to 638052 its reverse (250836), we get a palindrome (888888).

The spelling of 638052 in words is "six hundred thirty-eight thousand, fifty-two".