328309688 has 16 divisors (see below), whose sum is σ = 703520880. Its totient is φ = 140704128.

The previous prime is 328309669. The next prime is 328309703. The reversal of 328309688 is 886903823.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2931281 + ... + 2931392.

It is an arithmetic number, because the mean of its divisors is an integer number (43970055).

Almost surely, 2^328309688 is an apocalyptic number.

It is an amenable number.

328309688 is an abundant number, since it is smaller than the sum of its proper divisors (375211192).

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

328309688 is a wasteful number, since it uses less digits than its factorization.

328309688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5862686 (or 5862682 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 328309688 is about 18119.3180887140. The cubic root of 328309688 is about 689.8604268555.

The spelling of 328309688 in words is "three hundred twenty-eight million, three hundred nine thousand, six hundred eighty-eight".