22186138 has 16 divisors (see below), whose sum is σ = 36126720. Its totient is φ = 10157616.

The previous prime is 22186133. The next prime is 22186147. The reversal of 22186138 is 83168122.

It is not an unprimeable number, because it can be changed into a prime (22186133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58 + ... + 6661.

It is an arithmetic number, because the mean of its divisors is an integer number (2257920).

Almost surely, 2^22186138 is an apocalyptic number.

22186138 is a deficient number, since it is larger than the sum of its proper divisors (13940582).

22186138 is a wasteful number, since it uses less digits than its factorization.

22186138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6861.

The product of its digits is 4608, while the sum is 31.

The square root of 22186138 is about 4710.2163432267. The cubic root of 22186138 is about 280.9919662685.

The spelling of 22186138 in words is "twenty-two million, one hundred eighty-six thousand, one hundred thirty-eight".