328399904 has 48 divisors (see below), whose sum is σ = 754645248. Its totient is φ = 137743872.

The previous prime is 328399891. The next prime is 328399909. The reversal of 328399904 is 409993823.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (328399909) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 5069 + ... + 26124.

It is an arithmetic number, because the mean of its divisors is an integer number (15721776).

Almost surely, 2^328399904 is an apocalyptic number.

It is an amenable number.

328399904 is an abundant number, since it is smaller than the sum of its proper divisors (426245344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

328399904 is a wasteful number, since it uses less digits than its factorization.

328399904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31257 (or 31249 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 47.

The square root of 328399904 is about 18121.8074153766. The cubic root of 328399904 is about 689.9236098306.

The spelling of 328399904 in words is "three hundred twenty-eight million, three hundred ninety-nine thousand, nine hundred four".