218274282 has 12 divisors (see below), whose sum is σ = 472927650. Its totient is φ = 72758088.

The previous prime is 218274281. The next prime is 218274289. The reversal of 218274282 is 282472812.

It can be written as a sum of positive squares in only one way, i.e., 111957561 + 106316721 = 10581^2 + 10311^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (218274281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6063157 + ... + 6063192.

Almost surely, 2^218274282 is an apocalyptic number.

218274282 is an abundant number, since it is smaller than the sum of its proper divisors (254653368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

218274282 is a wasteful number, since it uses less digits than its factorization.

218274282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12126357 (or 12126354 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 218274282 is about 14774.1085010230. The cubic root of 218274282 is about 602.0984688247.

The spelling of 218274282 in words is "two hundred eighteen million, two hundred seventy-four thousand, two hundred eighty-two".