328688 has 10 divisors (see below), whose sum is σ = 636864. Its totient is φ = 164336.

The previous prime is 328687. The next prime is 328709. The reversal of 328688 is 886823.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10256 + ... + 10287.

2³²⁸⁶⁸⁸ is an apocalyptic number.

It is an amenable number.

328688 is a deficient number, since it is larger than the sum of its proper divisors (308176).

328688 is a wasteful number, since it uses less digits than its factorization.

328688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20551 (or 20545 counting only the distinct ones).

The product of its digits is 18432, while the sum is 35.

The square root of 328688 is about 573.3131779403. The cubic root of 328688 is about 69.0125301056.

The spelling of 328688 in words is "three hundred twenty-eight thousand, six hundred eighty-eight".