328105812 has 12 divisors (see below), whose sum is σ = 765580256. Its totient is φ = 109368600.

The previous prime is 328105807. The next prime is 328105837. The reversal of 328105812 is 218501823.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 328105812.

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 3 ways as a sum of consecutive naturals, for example, 13671064 + ... + 13671087.

Almost surely, 2^328105812 is an apocalyptic number.

It is an amenable number.

328105812 is an abundant number, since it is smaller than the sum of its proper divisors (437474444).

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

328105812 is a wasteful number, since it uses less digits than its factorization.

328105812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27342158 (or 27342156 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 328105812 is about 18113.6912858754. The cubic root of 328105812 is about 689.7175992016.

The spelling of 328105812 in words is "three hundred twenty-eight million, one hundred five thousand, eight hundred twelve".