243505364 has 12 divisors (see below), whose sum is σ = 426437844. Its totient is φ = 121665984.

The previous prime is 243505337. The next prime is 243505421. The reversal of 243505364 is 463505342.

It can be written as a sum of positive squares in 2 ways, for example, as 211469764 + 32035600 = 14542^2 + 5660^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 243505364.

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 3 ways as a sum of consecutive naturals, for example, 15137 + ... + 26760.

It is an arithmetic number, because the mean of its divisors is an integer number (35536487).

Almost surely, 2^243505364 is an apocalyptic number.

It is an amenable number.

243505364 is a deficient number, since it is larger than the sum of its proper divisors (182932480).

243505364 is a wasteful number, since it uses less digits than its factorization.

243505364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43354 (or 43352 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 32.

The square root of 243505364 is about 15604.6584070271. The cubic root of 243505364 is about 624.4574397550.

The spelling of 243505364 in words is "two hundred forty-three million, five hundred five thousand, three hundred sixty-four".