328403218 has 16 divisors (see below), whose sum is σ = 578725056. Its totient is φ = 137791440.

The previous prime is 328403213. The next prime is 328403219. The reversal of 328403218 is 812304823.

It is a self number, because there is not a number n which added to its sum of digits gives 328403218.

It is not an unprimeable number, because it can be changed into a prime (328403213) by changing a digit.

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, 573846 + ... + 574417.

It is an arithmetic number, because the mean of its divisors is an integer number (36170316).

Almost surely, 2^328403218 is an apocalyptic number.

328403218 is a deficient number, since it is larger than the sum of its proper divisors (250321838).

328403218 is a wasteful number, since it uses less digits than its factorization.

328403218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148289.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 328403218 is about 18121.8988519415. The cubic root of 328403218 is about 689.9259305775.

The spelling of 328403218 in words is "three hundred twenty-eight million, four hundred three thousand, two hundred eighteen".