438328 has 32 divisors (see below), whose sum is σ = 952560. Its totient is φ = 186880.

The previous prime is 438313. The next prime is 438329. The reversal of 438328 is 823834.

It is a junction number, because it is equal to n+sod(n) for n = 438296 and 438305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1350 + ... + 1642.

2⁴³⁸³²⁸ 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 438328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (476280).

438328 is an abundant number, since it is smaller than the sum of its proper divisors (514232).

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

438328 is a wasteful number, since it uses less digits than its factorization.

438328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327 (or 323 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 438328 is about 662.0634410689. The cubic root of 438328 is about 75.9625854621.

The spelling of 438328 in words is "four hundred thirty-eight thousand, three hundred twenty-eight".