328668768 has 72 divisors (see below), whose sum is σ = 948657528. Its totient is φ = 107914752.

The previous prime is 328668721. The next prime is 328668787. The reversal of 328668768 is 867866823.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a zygodrome in base 5.

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 in 11 ways as a sum of consecutive naturals, for example, 10780 + ... + 27812.

It is an arithmetic number, because the mean of its divisors is an integer number (13175799).

Almost surely, 2^328668768 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 328668768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (474328764).

328668768 is an abundant number, since it is smaller than the sum of its proper divisors (619988760).

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

328668768 is a wasteful number, since it uses less digits than its factorization.

328668768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17116 (or 17105 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The square root of 328668768 is about 18129.2241422516. The cubic root of 328668768 is about 690.1118407242. Note that the first 3 decimals are identical.

The spelling of 328668768 in words is "three hundred twenty-eight million, six hundred sixty-eight thousand, seven hundred sixty-eight".