328402318 has 4 divisors (see below), whose sum is σ = 492603480. Its totient is φ = 164201158.

The previous prime is 328402307. The next prime is 328402331. The reversal of 328402318 is 813204823.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 328402318.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82100578 + ... + 82100581.

It is an arithmetic number, because the mean of its divisors is an integer number (123150870).

Almost surely, 2^328402318 is an apocalyptic number.

328402318 is a deficient number, since it is larger than the sum of its proper divisors (164201162).

328402318 is a wasteful number, since it uses less digits than its factorization.

328402318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164201161.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 328402318 is about 18121.8740200896. The cubic root of 328402318 is about 689.9253003219.

The spelling of 328402318 in words is "three hundred twenty-eight million, four hundred two thousand, three hundred eighteen".