328388628886020 has 72 divisors (see below), whose sum is σ = 996118644515904. Its totient is φ = 87569732225088.

The previous prime is 328388628886013. The next prime is 328388628886037. The reversal of 328388628886020 is 20688826883823.

328388628886020 is a `hidden beast` number, since 3 + 2 + 8 + 3 + 8 + 8 + 6 + 2 + 8 + 8 + 8 + 602 + 0 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 328388628886020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22234147 + ... + 33928373.

It is an arithmetic number, because the mean of its divisors is an integer number (13834981173832).

Almost surely, 2^{328388628886020} is an apocalyptic number.

328388628886020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

328388628886020 is an abundant number, since it is smaller than the sum of its proper divisors (667730015629884).

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

328388628886020 is a wasteful number, since it uses less digits than its factorization.

328388628886020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11850249 (or 11850244 counting only the distinct ones).

The product of its (nonzero) digits is 679477248, while the sum is 72.

The spelling of 328388628886020 in words is "three hundred twenty-eight trillion, three hundred eighty-eight billion, six hundred twenty-eight million, eight hundred eighty-six thousand, twenty".