328438 has 8 divisors (see below), whose sum is σ = 537480. Its totient is φ = 149280.

The previous prime is 328429. The next prime is 328439. The reversal of 328438 is 834823.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 3⁹ + 2¹⁷ + 4² + 8 + 3¹¹ + 8³ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328439) by changing a digit.

328438 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 3 ways as a sum of consecutive naturals, for example, 7443 + ... + 7486.

It is an arithmetic number, because the mean of its divisors is an integer number (67185).

2³²⁸⁴³⁸ is an apocalyptic number.

328438 is a deficient number, since it is larger than the sum of its proper divisors (209042).

328438 is a wasteful number, since it uses less digits than its factorization.

328438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14942.

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

The square root of 328438 is about 573.0951055453. The cubic root of 328438 is about 68.9950286974.

It can be divided in two parts, 3 and 28438, that added together give a triangular number (28441 = T₂₃₈).

The spelling of 328438 in words is "three hundred twenty-eight thousand, four hundred thirty-eight".