438204 has 36 divisors (see below), whose sum is σ = 1122296. Its totient is φ = 132288.

The previous prime is 438203. The next prime is 438211. The reversal of 438204 is 402834.

It is a happy number.

438204 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8242 + ... + 8294.

2⁴³⁸²⁰⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 438204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (561148).

438204 is an abundant number, since it is smaller than the sum of its proper divisors (684092).

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

438204 is a wasteful number, since it uses less digits than its factorization.

438204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 438204 is about 661.9697878302. The cubic root of 438204 is about 75.9554216875.

The spelling of 438204 in words is "four hundred thirty-eight thousand, two hundred four".