328656866000 has 80 divisors (see below), whose sum is σ = 816170656080. Its totient is φ = 127909670400.

The previous prime is 328656865993. The next prime is 328656866047. The reversal of 328656866000 is 668656823.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 115659847744 + 212997018256 = 340088^2 + 461516^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a self number, because there is not a number n which added to its sum of digits gives 328656866000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2146655 + ... + 2294654.

It is an arithmetic number, because the mean of its divisors is an integer number (10202133201).

Almost surely, 2^328656866000 is an apocalyptic number.

It is an amenable number.

328656866000 is an abundant number, since it is smaller than the sum of its proper divisors (487513790080).

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

328656866000 is a wasteful number, since it uses less digits than its factorization.

328656866000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4441369 (or 4441353 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 50.

The spelling of 328656866000 in words is "three hundred twenty-eight billion, six hundred fifty-six million, eight hundred sixty-six thousand".