638200 has 24 divisors (see below), whose sum is σ = 1484280. Its totient is φ = 255200.

The previous prime is 638179. The next prime is 638201. The reversal of 638200 is 2836.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (638201) by changing a digit.

638200 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1396 + ... + 1795.

It is an arithmetic number, because the mean of its divisors is an integer number (61845).

2⁶³⁸²⁰⁰ is an apocalyptic number.

It is an amenable number.

638200 is an abundant number, since it is smaller than the sum of its proper divisors (846080).

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

638200 is a wasteful number, since it uses less digits than its factorization.

638200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3207 (or 3198 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 638200 is about 798.8742078701. The cubic root of 638200 is about 86.0965204400.

It can be divided in two parts, 638 and 200, that added together give a palindrome (838).

The spelling of 638200 in words is "six hundred thirty-eight thousand, two hundred".