22222544 has 20 divisors (see below), whose sum is σ = 43763940. Its totient is φ = 10928640.

The previous prime is 22222537. The next prime is 22222547. The reversal of 22222544 is 44522222.

It can be written as a sum of positive squares in 2 ways, for example, as 506944 + 21715600 = 712^2 + 4660^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222547) 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 3 ways as a sum of consecutive naturals, for example, 10409 + ... + 12360.

It is an arithmetic number, because the mean of its divisors is an integer number (2188197).

Almost surely, 2^22222544 is an apocalyptic number.

It is an amenable number.

22222544 is a deficient number, since it is larger than the sum of its proper divisors (21541396).

22222544 is a wasteful number, since it uses less digits than its factorization.

22222544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22838 (or 22832 counting only the distinct ones).

The product of its digits is 2560, while the sum is 23.

The square root of 22222544 is about 4714.0793374741. The cubic root of 22222544 is about 281.1455787501.

Adding to 22222544 its reverse (44522222), we get a palindrome (66744766).

The spelling of 22222544 in words is "twenty-two million, two hundred twenty-two thousand, five hundred forty-four".