218464268 has 24 divisors (see below), whose sum is σ = 417856320. Its totient is φ = 99114320.

The previous prime is 218464249. The next prime is 218464283. The reversal of 218464268 is 862464812.

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, 20363 + ... + 29181.

It is an arithmetic number, because the mean of its divisors is an integer number (17410680).

Almost surely, 2^218464268 is an apocalyptic number.

It is an amenable number.

218464268 is a deficient number, since it is larger than the sum of its proper divisors (199392052).

218464268 is a wasteful number, since it uses less digits than its factorization.

218464268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9397 (or 9395 counting only the distinct ones).

The product of its digits is 147456, while the sum is 41.

The square root of 218464268 is about 14780.5367967473. The cubic root of 218464268 is about 602.2731070616.

The spelling of 218464268 in words is "two hundred eighteen million, four hundred sixty-four thousand, two hundred sixty-eight".