328402 has 4 divisors (see below), whose sum is σ = 492606. Its totient is φ = 164200.

The previous prime is 328397. The next prime is 328411. The reversal of 328402 is 204823.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 204823 = 239 ⋅857.

It can be written as a sum of positive squares in only one way, i.e., 292681 + 35721 = 541^2 + 189^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 328402.

It is an unprimeable 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, 82099 + ... + 82102.

2³²⁸⁴⁰² is an apocalyptic number.

328402 is a deficient number, since it is larger than the sum of its proper divisors (164204).

328402 is a wasteful number, since it uses less digits than its factorization.

328402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164203.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 328402 is about 573.0636962852. The cubic root of 328402 is about 68.9925077631.

The spelling of 328402 in words is "three hundred twenty-eight thousand, four hundred two".