328720618224 has 40 divisors (see below), whose sum is σ = 943549923920. Its totient is φ = 109573539264.

The previous prime is 328720618223. The next prime is 328720618267. The reversal of 328720618224 is 422816027823.

328720618224 is a `hidden beast` number, since 3 + 2 + 8 + 7 + 2 + 0 + 618 + 2 + 24 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 328720618224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328720618223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380463247 + ... + 380464110.

It is an arithmetic number, because the mean of its divisors is an integer number (23588748098).

Almost surely, 2^328720618224 is an apocalyptic number.

It is an amenable number.

328720618224 is an abundant number, since it is smaller than the sum of its proper divisors (614829305696).

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

328720618224 is a wasteful number, since it uses less digits than its factorization.

328720618224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760927374 (or 760927362 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 328720618224 in words is "three hundred twenty-eight billion, seven hundred twenty million, six hundred eighteen thousand, two hundred twenty-four".