328678816 has 24 divisors (see below), whose sum is σ = 685151460. Its totient is φ = 154672128.

The previous prime is 328678787. The next prime is 328678817. The reversal of 328678816 is 618876823.

It can be written as a sum of positive squares in 2 ways, for example, as 316982416 + 11696400 = 17804^2 + 3420^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 328678816.

It is not an unprimeable number, because it can be changed into a prime (328678817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301551 + ... + 302638.

Almost surely, 2^328678816 is an apocalyptic number.

It is an amenable number.

328678816 is an abundant number, since it is smaller than the sum of its proper divisors (356472644).

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

328678816 is a wasteful number, since it uses less digits than its factorization.

328678816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604216 (or 604208 counting only the distinct ones).

The product of its digits is 774144, while the sum is 49.

The square root of 328678816 is about 18129.5012617557. The cubic root of 328678816 is about 690.1188733091.

The spelling of 328678816 in words is "three hundred twenty-eight million, six hundred seventy-eight thousand, eight hundred sixteen".