222318438 has 16 divisors (see below), whose sum is σ = 446157936. Its totient is φ = 73852640.

The previous prime is 222318427. The next prime is 222318451. The reversal of 222318438 is 834813222.

It is a junction number, because it is equal to n+sod(n) for n = 222318399 and 222318408.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 61473 + ... + 64988.

It is an arithmetic number, because the mean of its divisors is an integer number (27884871).

Almost surely, 2^222318438 is an apocalyptic number.

222318438 is an abundant number, since it is smaller than the sum of its proper divisors (223839498).

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

222318438 is a wasteful number, since it uses less digits than its factorization.

222318438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126759.

The product of its digits is 18432, while the sum is 33.

The square root of 222318438 is about 14910.3466760502. The cubic root of 222318438 is about 605.7942694995.

It can be divided in two parts, 2223184 and 38, that added together give a palindrome (2223222).

The spelling of 222318438 in words is "two hundred twenty-two million, three hundred eighteen thousand, four hundred thirty-eight".