243402866 has 16 divisors (see below), whose sum is σ = 420550656. Its totient is φ = 103493376.

The previous prime is 243402857. The next prime is 243402877. The reversal of 243402866 is 668204342.

It is a Curzon number.

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, 66671 + ... + 70226.

It is an arithmetic number, because the mean of its divisors is an integer number (26284416).

Almost surely, 2^243402866 is an apocalyptic number.

243402866 is a deficient number, since it is larger than the sum of its proper divisors (177147790).

243402866 is a wasteful number, since it uses less digits than its factorization.

243402866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137033.

The product of its (nonzero) digits is 55296, while the sum is 35.

The square root of 243402866 is about 15601.3738497608. The cubic root of 243402866 is about 624.3698104447.

The spelling of 243402866 in words is "two hundred forty-three million, four hundred two thousand, eight hundred sixty-six".