243253266 has 16 divisors (see below), whose sum is σ = 486692064. Its totient is φ = 81053504.

The previous prime is 243253259. The next prime is 243253273. The reversal of 243253266 is 662352342.

243253266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (243253259) and next prime (243253273).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14026 + ... + 26138.

It is an arithmetic number, because the mean of its divisors is an integer number (30418254).

Almost surely, 2^243253266 is an apocalyptic number.

243253266 is an abundant number, since it is smaller than the sum of its proper divisors (243438798).

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

243253266 is a wasteful number, since it uses less digits than its factorization.

243253266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15465.

The product of its digits is 51840, while the sum is 33.

The square root of 243253266 is about 15596.5786632838. The cubic root of 243253266 is about 624.2418677353.

The spelling of 243253266 in words is "two hundred forty-three million, two hundred fifty-three thousand, two hundred sixty-six".