22112644 has 6 divisors (see below), whose sum is σ = 38697134. Its totient is φ = 11056320.

The previous prime is 22112639. The next prime is 22112647. The reversal of 22112644 is 44621122.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16646400 + 5466244 = 4080^2 + 2338^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2764077 + ... + 2764084.

Almost surely, 2^22112644 is an apocalyptic number.

It is an amenable number.

22112644 is a deficient number, since it is larger than the sum of its proper divisors (16584490).

22112644 is a wasteful number, since it uses less digits than its factorization.

22112644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5528165 (or 5528163 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 22112644 is about 4702.4083191488. The cubic root of 22112644 is about 280.6813508628.

Adding to 22112644 its reverse (44621122), we get a palindrome (66733766).

The spelling of 22112644 in words is "twenty-two million, one hundred twelve thousand, six hundred forty-four".