218271272 has 16 divisors (see below), whose sum is σ = 411339060. Its totient is φ = 108580864.

The previous prime is 218271269. The next prime is 218271299. The reversal of 218271272 is 272172812.

It can be written as a sum of positive squares in 2 ways, for example, as 218271076 + 196 = 14774^2 + 14^2 .

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, 67673 + ... + 70824.

Almost surely, 2^218271272 is an apocalyptic number.

It is an amenable number.

218271272 is a deficient number, since it is larger than the sum of its proper divisors (193067788).

218271272 is a wasteful number, since it uses less digits than its factorization.

218271272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138700 (or 138696 counting only the distinct ones).

The product of its digits is 6272, while the sum is 32.

The square root of 218271272 is about 14774.0066332732. The cubic root of 218271272 is about 602.0957011682.

The spelling of 218271272 in words is "two hundred eighteen million, two hundred seventy-one thousand, two hundred seventy-two".