243415812 has 12 divisors (see below), whose sum is σ = 567970256. Its totient is φ = 81138600.

The previous prime is 243415807. The next prime is 243415829. The reversal of 243415812 is 218514342.

243415812 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 243415812.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10142314 + ... + 10142337.

Almost surely, 2^243415812 is an apocalyptic number.

It is an amenable number.

243415812 is an abundant number, since it is smaller than the sum of its proper divisors (324554444).

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

243415812 is a wasteful number, since it uses less digits than its factorization.

243415812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20284658 (or 20284656 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 243415812 is about 15601.7887436024. The cubic root of 243415812 is about 624.3808798135.

The spelling of 243415812 in words is "two hundred forty-three million, four hundred fifteen thousand, eight hundred twelve".