22138118 has 16 divisors (see below), whose sum is σ = 33762960. Its totient is φ = 10885536.

The previous prime is 22138093. The next prime is 22138133. The reversal of 22138118 is 81183122.

It is a Curzon number.

It is a congruent number.

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, 37421 + ... + 38007.

It is an arithmetic number, because the mean of its divisors is an integer number (2110185).

Almost surely, 2^22138118 is an apocalyptic number.

22138118 is a deficient number, since it is larger than the sum of its proper divisors (11624842).

22138118 is a wasteful number, since it uses less digits than its factorization.

22138118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871.

The product of its digits is 768, while the sum is 26.

The square root of 22138118 is about 4705.1161515950. The cubic root of 22138118 is about 280.7890921296.

The spelling of 22138118 in words is "twenty-two million, one hundred thirty-eight thousand, one hundred eighteen".