243346404 has 96 divisors (see below), whose sum is σ = 676601856. Its totient is φ = 66608640.

The previous prime is 243346393. The next prime is 243346421. The reversal of 243346404 is 404643342.

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 31 ways as a sum of consecutive naturals, for example, 293839 + ... + 294665.

It is an arithmetic number, because the mean of its divisors is an integer number (7047936).

Almost surely, 2^243346404 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 243346404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338300928).

243346404 is an abundant number, since it is smaller than the sum of its proper divisors (433255452).

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

243346404 is a wasteful number, since it uses less digits than its factorization.

243346404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985 (or 983 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

The square root of 243346404 is about 15599.5642246827. The cubic root of 243346404 is about 624.3215284954.

Adding to 243346404 its reverse (404643342), we get a palindrome (647989746).

The spelling of 243346404 in words is "two hundred forty-three million, three hundred forty-six thousand, four hundred four".