328408 has 8 divisors (see below), whose sum is σ = 615780. Its totient is φ = 164200.

The previous prime is 328397. The next prime is 328411. The reversal of 328408 is 804823.

It is a tau number, because it is divible by the number of its divisors (8).

It is a nialpdrome in base 13.

It is a congruent number.

It is an unprimeable number.

328408 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20518 + ... + 20533.

2³²⁸⁴⁰⁸ is an apocalyptic number.

It is an amenable number.

328408 is a deficient number, since it is larger than the sum of its proper divisors (287372).

328408 is a wasteful number, since it uses less digits than its factorization.

328408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41057 (or 41053 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 328408 is about 573.0689312814. The cubic root of 328408 is about 68.9929279316.

The spelling of 328408 in words is "three hundred twenty-eight thousand, four hundred eight".