326643312 has 20 divisors (see below), whose sum is σ = 843828680. Its totient is φ = 108881088.

The previous prime is 326643271. The next prime is 326643319. The reversal of 326643312 is 213346623.

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

It is a self number, because there is not a number n which added to its sum of digits gives 326643312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326643319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3402487 + ... + 3402582.

It is an arithmetic number, because the mean of its divisors is an integer number (42191434).

Almost surely, 2^326643312 is an apocalyptic number.

It is an amenable number.

326643312 is an abundant number, since it is smaller than the sum of its proper divisors (517185368).

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

326643312 is a wasteful number, since it uses less digits than its factorization.

326643312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6805080 (or 6805074 counting only the distinct ones).

The product of its digits is 15552, while the sum is 30.

The square root of 326643312 is about 18073.2761833598. The cubic root of 326643312 is about 688.6912895785.

Adding to 326643312 its reverse (213346623), we get a palindrome (539989935).

The spelling of 326643312 in words is "three hundred twenty-six million, six hundred forty-three thousand, three hundred twelve".