243426866 has 8 divisors (see below), whose sum is σ = 368490540. Its totient is φ = 120596688.

The previous prime is 243426857. The next prime is 243426877. The reversal of 243426866 is 668624342.

It can be written as a sum of positive squares in 2 ways, for example, as 228765625 + 14661241 = 15125^2 + 3829^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 558101 + ... + 558536.

Almost surely, 2^243426866 is an apocalyptic number.

243426866 is a deficient number, since it is larger than the sum of its proper divisors (125063674).

243426866 is a wasteful number, since it uses less digits than its factorization.

243426866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116748.

The product of its digits is 331776, while the sum is 41.

The square root of 243426866 is about 15602.1429938326. The cubic root of 243426866 is about 624.3903311329.

The spelling of 243426866 in words is "two hundred forty-three million, four hundred twenty-six thousand, eight hundred sixty-six".