218244268 has 12 divisors (see below), whose sum is σ = 416648232. Its totient is φ = 99201920.

The previous prime is 218244211. The next prime is 218244281. The reversal of 218244268 is 862442812.

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, 2480005 + ... + 2480092.

It is an arithmetic number, because the mean of its divisors is an integer number (34720686).

Almost surely, 2^218244268 is an apocalyptic number.

It is an amenable number.

218244268 is a deficient number, since it is larger than the sum of its proper divisors (198403964).

218244268 is a wasteful number, since it uses less digits than its factorization.

218244268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4960112 (or 4960110 counting only the distinct ones).

The product of its digits is 49152, while the sum is 37.

The square root of 218244268 is about 14773.0927026131. The cubic root of 218244268 is about 602.0708701972.

The spelling of 218244268 in words is "two hundred eighteen million, two hundred forty-four thousand, two hundred sixty-eight".