243810816 has 40 divisors (see below), whose sum is σ = 649531344. Its totient is φ = 81269760.

The previous prime is 243810799. The next prime is 243810823. The reversal of 243810816 is 618018342.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77830 + ... + 80901.

Almost surely, 2^243810816 is an apocalyptic number.

It is an amenable number.

243810816 is an abundant number, since it is smaller than the sum of its proper divisors (405720528).

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

243810816 is an equidigital number, since it uses as much as digits as its factorization.

243810816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158752 (or 158736 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 243810816 is about 15614.4425452848. The cubic root of 243810816 is about 624.7184361606.

The spelling of 243810816 in words is "two hundred forty-three million, eight hundred ten thousand, eight hundred sixteen".