328490931972 has 48 divisors (see below), whose sum is σ = 885818263680. Its totient is φ = 92800004352.

The previous prime is 328490931971. The next prime is 328490932009. The reversal of 328490931972 is 279139094823.

It is not an unprimeable number, because it can be changed into a prime (328490931971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21962223 + ... + 21977174.

It is an arithmetic number, because the mean of its divisors is an integer number (18454547160).

Almost surely, 2^328490931972 is an apocalyptic number.

It is an amenable number.

328490931972 is an abundant number, since it is smaller than the sum of its proper divisors (557327331708).

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

328490931972 is a wasteful number, since it uses less digits than its factorization.

328490931972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43939500 (or 43939498 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 57.

The spelling of 328490931972 in words is "three hundred twenty-eight billion, four hundred ninety million, nine hundred thirty-one thousand, nine hundred seventy-two".