328668780 has 192 divisors, whose sum is σ = 1058416128. Its totient is φ = 75479040.

The previous prime is 328668721. The next prime is 328668787. The reversal of 328668780 is 87866823.

It is a happy number.

328668780 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (328668787) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1049904 + ... + 1050216.

It is an arithmetic number, because the mean of its divisors is an integer number (5512584).

Almost surely, 2^328668780 is an apocalyptic number.

328668780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 328668780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (529208064).

328668780 is an abundant number, since it is smaller than the sum of its proper divisors (729747348).

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

328668780 is a wasteful number, since it uses less digits than its factorization.

328668780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The square root of 328668780 is about 18129.2244732090. The cubic root of 328668780 is about 690.1118491230. Note that the first 3 decimals are identical.

The spelling of 328668780 in words is "three hundred twenty-eight million, six hundred sixty-eight thousand, seven hundred eighty".