22213544 has 16 divisors (see below), whose sum is σ = 41701920. Its totient is φ = 11093040.

The previous prime is 22213537. The next prime is 22213547. The reversal of 22213544 is 44531222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22213547) 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 3 ways as a sum of consecutive naturals, for example, 9359 + ... + 11489.

It is an arithmetic number, because the mean of its divisors is an integer number (2606370).

Almost surely, 2^22213544 is an apocalyptic number.

It is an amenable number.

22213544 is a deficient number, since it is larger than the sum of its proper divisors (19488376).

22213544 is a wasteful number, since it uses less digits than its factorization.

22213544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3440 (or 3436 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 22213544 is about 4713.1246535605. The cubic root of 22213544 is about 281.1076195217.

Adding to 22213544 its reverse (44531222), we get a palindrome (66744766).

The spelling of 22213544 in words is "twenty-two million, two hundred thirteen thousand, five hundred forty-four".