323304436 has 72 divisors (see below), whose sum is σ = 741545280. Its totient is φ = 120347136.

The previous prime is 323304433. The next prime is 323304451. The reversal of 323304436 is 634403323.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323304433) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78435 + ... + 82453.

It is an arithmetic number, because the mean of its divisors is an integer number (10299240).

Almost surely, 2^323304436 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 323304436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (370772640).

323304436 is an abundant number, since it is smaller than the sum of its proper divisors (418240844).

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

323304436 is a wasteful number, since it uses less digits than its factorization.

323304436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4073 (or 4058 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 28.

The square root of 323304436 is about 17980.6683969201. The cubic root of 323304436 is about 686.3366983252.

Adding to 323304436 its reverse (634403323), we get a palindrome (957707759).

The spelling of 323304436 in words is "three hundred twenty-three million, three hundred four thousand, four hundred thirty-six".