323404400 has 120 divisors (see below), whose sum is σ = 875324928. Its totient is φ = 113760000.

The previous prime is 323404399. The next prime is 323404421. The reversal of 323404400 is 4404323.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135215 + ... + 137585.

Almost surely, 2^323404400 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 323404400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (437662464).

323404400 is an abundant number, since it is smaller than the sum of its proper divisors (551920528).

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

323404400 is a wasteful number, since it uses less digits than its factorization.

323404400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2431 (or 2420 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 323404400 is about 17983.4479452634. The cubic root of 323404400 is about 686.4074282463.

Adding to 323404400 its reverse (4404323), we get a palindrome (327808723).

The spelling of 323404400 in words is "three hundred twenty-three million, four hundred four thousand, four hundred".