328217985 has 24 divisors (see below), whose sum is σ = 570136320. Its totient is φ = 174672672.

The previous prime is 328217947. The next prime is 328217999. The reversal of 328217985 is 589712823.

It is a happy number.

It is not a de Polignac number, because 328217985 - 2⁹ = 328217473 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 328217985.

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 23 ways as a sum of consecutive naturals, for example, 13942 + ... + 29168.

It is an arithmetic number, because the mean of its divisors is an integer number (23755680).

Almost surely, 2^328217985 is an apocalyptic number.

It is an amenable number.

328217985 is a deficient number, since it is larger than the sum of its proper divisors (241918335).

328217985 is a wasteful number, since it uses less digits than its factorization.

328217985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15717 (or 15714 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 328217985 is about 18116.7873807693. The cubic root of 328217985 is about 689.7961905932.

The spelling of 328217985 in words is "three hundred twenty-eight million, two hundred seventeen thousand, nine hundred eighty-five".