328995920 has 40 divisors (see below), whose sum is σ = 834455520. Its totient is φ = 119634560.

The previous prime is 328995907. The next prime is 328995943. The reversal of 328995920 is 29599823.

328995920 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186050 + ... + 187809.

It is an arithmetic number, because the mean of its divisors is an integer number (20861388).

Almost surely, 2^328995920 is an apocalyptic number.

It is an amenable number.

328995920 is an abundant number, since it is smaller than the sum of its proper divisors (505459600).

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

328995920 is a wasteful number, since it uses less digits than its factorization.

328995920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373883 (or 373877 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 328995920 is about 18138.2446780277. The cubic root of 328995920 is about 690.3407404782.

The spelling of 328995920 in words is "three hundred twenty-eight million, nine hundred ninety-five thousand, nine hundred twenty".