328278664 has 64 divisors (see below), whose sum is σ = 719706240. Its totient is φ = 137479680.

The previous prime is 328278659. The next prime is 328278697. The reversal of 328278664 is 466872823.

328278664 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 535222 + ... + 535834.

It is an arithmetic number, because the mean of its divisors is an integer number (11245410).

Almost surely, 2^328278664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 328278664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359853120).

328278664 is an abundant number, since it is smaller than the sum of its proper divisors (391427576).

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

328278664 is a wasteful number, since it uses less digits than its factorization.

328278664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830 (or 826 counting only the distinct ones).

The product of its digits is 774144, while the sum is 46.

The square root of 328278664 is about 18118.4619656305. The cubic root of 328278664 is about 689.8386964540.

The spelling of 328278664 in words is "three hundred twenty-eight million, two hundred seventy-eight thousand, six hundred sixty-four".