326143636 has 72 divisors (see below), whose sum is σ = 712440960. Its totient is φ = 127910016.

The previous prime is 326143577. The next prime is 326143661. The reversal of 326143636 is 636341623.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 742705 + ... + 743143.

Almost surely, 2^326143636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 326143636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (356220480).

326143636 is an abundant number, since it is smaller than the sum of its proper divisors (386297324).

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

326143636 is a wasteful number, since it uses less digits than its factorization.

326143636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633 (or 618 counting only the distinct ones).

The product of its digits is 46656, while the sum is 34.

The square root of 326143636 is about 18059.4472783638. The cubic root of 326143636 is about 688.3399398371.

The spelling of 326143636 in words is "three hundred twenty-six million, one hundred forty-three thousand, six hundred thirty-six".