326399364 has 18 divisors (see below), whose sum is σ = 825065150. Its totient is φ = 108799776.

The previous prime is 326399357. The next prime is 326399399. The reversal of 326399364 is 463993623.

326399364 is a `hidden beast` number, since 3 + 2 + 639 + 9 + 3 + 6 + 4 = 666.

326399364 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 219276864 + 107122500 = 14808^2 + 10350^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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 nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4533289 + ... + 4533360.

Almost surely, 2^326399364 is an apocalyptic number.

It is an amenable number.

326399364 is an abundant number, since it is smaller than the sum of its proper divisors (498665786).

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

326399364 is a wasteful number, since it uses less digits than its factorization.

326399364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9066659 (or 9066654 counting only the distinct ones).

The product of its digits is 629856, while the sum is 45.

The square root of 326399364 is about 18066.5260634135. The cubic root of 326399364 is about 688.5198010896.

The spelling of 326399364 in words is "three hundred twenty-six million, three hundred ninety-nine thousand, three hundred sixty-four".