323404420 has 24 divisors (see below), whose sum is σ = 697506264. Its totient is φ = 125865216.

The previous prime is 323404399. The next prime is 323404421. The reversal of 323404420 is 24404323.

It can be written as a sum of positive squares in 4 ways, for example, as 22867524 + 300536896 = 4782^2 + 17336^2 .

It is a junction number, because it is equal to n+sod(n) for n = 323404391 and 323404400.

It is not an unprimeable number, because it can be changed into a prime (323404421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217777 + ... + 219256.

It is an arithmetic number, because the mean of its divisors is an integer number (29062761).

Almost surely, 2^323404420 is an apocalyptic number.

It is an amenable number.

323404420 is an abundant number, since it is smaller than the sum of its proper divisors (374101844).

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

323404420 is a wasteful number, since it uses less digits than its factorization.

323404420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437079 (or 437077 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 323404420 is about 17983.4485013303. The cubic root of 323404420 is about 686.4074423959.

Adding to 323404420 its reverse (24404323), we get a palindrome (347808743).

The spelling of 323404420 in words is "three hundred twenty-three million, four hundred four thousand, four hundred twenty".