328557564 has 36 divisors (see below), whose sum is σ = 833501760. Its totient is φ = 109126080.

The previous prime is 328557533. The next prime is 328557571. The reversal of 328557564 is 465755823.

328557564 is a `hidden beast` number, since 3 + 2 + 85 + 5 + 7 + 564 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×328557564² = 215900145723228192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6124 + ... + 26355.

Almost surely, 2^328557564 is an apocalyptic number.

It is an amenable number.

328557564 is an abundant number, since it is smaller than the sum of its proper divisors (504944196).

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

328557564 is a wasteful number, since it uses less digits than its factorization.

328557564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32770 (or 32765 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 45.

The square root of 328557564 is about 18126.1569010091. The cubic root of 328557564 is about 690.0339995849.

The spelling of 328557564 in words is "three hundred twenty-eight million, five hundred fifty-seven thousand, five hundred sixty-four".