218072265 has 16 divisors (see below), whose sum is σ = 358346688. Its totient is φ = 113161536.

The previous prime is 218072219. The next prime is 218072273. The reversal of 218072265 is 562270812.

It is not a de Polignac number, because 218072265 - 2⁷ = 218072137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195907 + ... + 197016.

It is an arithmetic number, because the mean of its divisors is an integer number (22396668).

Almost surely, 2^218072265 is an apocalyptic number.

It is an amenable number.

218072265 is a deficient number, since it is larger than the sum of its proper divisors (140274423).

218072265 is a wasteful number, since it uses less digits than its factorization.

218072265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392968.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 218072265 is about 14767.2700591545. The cubic root of 218072265 is about 601.9126602945.

The spelling of 218072265 in words is "two hundred eighteen million, seventy-two thousand, two hundred sixty-five".