218592242 has 16 divisors (see below), whose sum is σ = 359576064. Its totient is φ = 98838000.

The previous prime is 218592229. The next prime is 218592251. The reversal of 218592242 is 242295812.

It is a happy number.

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, 21809 + ... + 30212.

It is an arithmetic number, because the mean of its divisors is an integer number (22473504).

Almost surely, 2^218592242 is an apocalyptic number.

218592242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

218592242 is a deficient number, since it is larger than the sum of its proper divisors (140983822).

218592242 is a wasteful number, since it uses less digits than its factorization.

218592242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52225.

The product of its digits is 23040, while the sum is 35.

The square root of 218592242 is about 14784.8653020580. The cubic root of 218592242 is about 602.3906857916.

The spelling of 218592242 in words is "two hundred eighteen million, five hundred ninety-two thousand, two hundred forty-two".