22144136 has 16 divisors (see below), whose sum is σ = 47451840. Its totient is φ = 9490320.

The previous prime is 22144117. The next prime is 22144169. The reversal of 22144136 is 63144122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197660 + ... + 197771.

It is an arithmetic number, because the mean of its divisors is an integer number (2965740).

Almost surely, 2^22144136 is an apocalyptic number.

It is an amenable number.

22144136 is an abundant number, since it is smaller than the sum of its proper divisors (25307704).

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

22144136 is a wasteful number, since it uses less digits than its factorization.

22144136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395444 (or 395440 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 22144136 is about 4705.7556247642. The cubic root of 22144136 is about 280.8145329502.

Adding to 22144136 its reverse (63144122), we get a palindrome (85288258).

The spelling of 22144136 in words is "twenty-two million, one hundred forty-four thousand, one hundred thirty-six".