22744161 has 12 divisors (see below), whose sum is σ = 35839440. Its totient is φ = 13784280.

The previous prime is 22744157. The next prime is 22744177. The reversal of 22744161 is 16144722.

It is not a de Polignac number, because 22744161 - 2² = 22744157 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22744061) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 114771 + ... + 114968.

It is an arithmetic number, because the mean of its divisors is an integer number (2986620).

Almost surely, 2^22744161 is an apocalyptic number.

It is an amenable number.

22744161 is a deficient number, since it is larger than the sum of its proper divisors (13095279).

22744161 is a wasteful number, since it uses less digits than its factorization.

22744161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229756 (or 229753 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 22744161 is about 4769.0838742886. The cubic root of 22744161 is about 283.3283116373.

Adding to 22744161 its reverse (16144722), we get a palindrome (38888883).

The spelling of 22744161 in words is "twenty-two million, seven hundred forty-four thousand, one hundred sixty-one".