22661244 has 36 divisors (see below), whose sum is σ = 58074016. Its totient is φ = 7449408.

The previous prime is 22661231. The next prime is 22661293. The reversal of 22661244 is 44216622.

22661244 is a `hidden beast` number, since 2 + 2 + 6 + 612 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1684 + ... + 6939.

Almost surely, 2^22661244 is an apocalyptic number.

It is an amenable number.

22661244 is an abundant number, since it is smaller than the sum of its proper divisors (35412772).

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

22661244 is a wasteful number, since it uses less digits than its factorization.

22661244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8706 (or 8701 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 22661244 is about 4760.3827577202. The cubic root of 22661244 is about 282.9835881387.

Adding to 22661244 its reverse (44216622), we get a palindrome (66877866).

The spelling of 22661244 in words is "twenty-two million, six hundred sixty-one thousand, two hundred forty-four".