328000285 has 8 divisors (see below), whose sum is σ = 394241976. Its totient is φ = 261972480.

The previous prime is 328000279. The next prime is 328000303. The reversal of 328000285 is 582000823.

It can be written as a sum of positive squares in 4 ways, for example, as 39476089 + 288524196 = 6283^2 + 16986^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-328000285 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50076 + ... + 56245.

It is an arithmetic number, because the mean of its divisors is an integer number (49280247).

Almost surely, 2^328000285 is an apocalyptic number.

It is an amenable number.

328000285 is a deficient number, since it is larger than the sum of its proper divisors (66241691).

328000285 is a wasteful number, since it uses less digits than its factorization.

328000285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106943.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 328000285 is about 18110.7781445194. The cubic root of 328000285 is about 689.6436478208.

The spelling of 328000285 in words is "three hundred twenty-eight million, two hundred eighty-five", and thus it is an aban number.