22655444 has 18 divisors (see below), whose sum is σ = 46120410. Its totient is φ = 9709392.

The previous prime is 22655443. The next prime is 22655489. The reversal of 22655444 is 44455622.

It can be written as a sum of positive squares in only one way, i.e., 21996100 + 659344 = 4690^2 + 812^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22655444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22655443) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 57599 + ... + 57990.

It is an arithmetic number, because the mean of its divisors is an integer number (2562245).

Almost surely, 2^22655444 is an apocalyptic number.

It is an amenable number.

22655444 is an abundant number, since it is smaller than the sum of its proper divisors (23464966).

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

22655444 is a wasteful number, since it uses less digits than its factorization.

22655444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115607 (or 115598 counting only the distinct ones).

The product of its digits is 38400, while the sum is 32.

The square root of 22655444 is about 4759.7735240240. The cubic root of 22655444 is about 282.9594434675.

The spelling of 22655444 in words is "twenty-two million, six hundred fifty-five thousand, four hundred forty-four".