218232842 has 16 divisors (see below), whose sum is σ = 351490752. Its totient is φ = 101250240.

The previous prime is 218232827. The next prime is 218232871. The reversal of 218232842 is 248232812.

It is a junction number, because it is equal to n+sod(n) for n = 218232799 and 218232808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42788 + ... + 47615.

It is an arithmetic number, because the mean of its divisors is an integer number (21968172).

Almost surely, 2^218232842 is an apocalyptic number.

218232842 is a deficient number, since it is larger than the sum of its proper divisors (133257910).

218232842 is a wasteful number, since it uses less digits than its factorization.

218232842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90493.

The product of its digits is 12288, while the sum is 32.

The square root of 218232842 is about 14772.7059809637. The cubic root of 218232842 is about 602.0603630380.

The spelling of 218232842 in words is "two hundred eighteen million, two hundred thirty-two thousand, eight hundred forty-two".