328421920452 has 24 divisors (see below), whose sum is σ = 779306253600. Its totient is φ = 107618482176.

The previous prime is 328421920433. The next prime is 328421920457. The reversal of 328421920452 is 254029124823.

It is not an unprimeable number, because it can be changed into a prime (328421920457) 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, 231935677 + ... + 231937092.

It is an arithmetic number, because the mean of its divisors is an integer number (32471093900).

Almost surely, 2^328421920452 is an apocalyptic number.

It is an amenable number.

328421920452 is an abundant number, since it is smaller than the sum of its proper divisors (450884333148).

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

328421920452 is a wasteful number, since it uses less digits than its factorization.

328421920452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463872835 (or 463872833 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 328421920452 in words is "three hundred twenty-eight billion, four hundred twenty-one million, nine hundred twenty thousand, four hundred fifty-two".