22144604 has 6 divisors (see below), whose sum is σ = 38753064. Its totient is φ = 11072300.

The previous prime is 22144601. The next prime is 22144621. The reversal of 22144604 is 40644122.

It is a self number, because there is not a number n which added to its sum of digits gives 22144604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22144601) 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 as a sum of consecutive naturals, namely, 2768072 + ... + 2768079.

It is an arithmetic number, because the mean of its divisors is an integer number (6458844).

Almost surely, 2^22144604 is an apocalyptic number.

It is an amenable number.

22144604 is a deficient number, since it is larger than the sum of its proper divisors (16608460).

22144604 is a wasteful number, since it uses less digits than its factorization.

22144604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5536155 (or 5536153 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 22144604 is about 4705.8053508406. The cubic root of 22144604 is about 280.8165112057.

Adding to 22144604 its reverse (40644122), we get a palindrome (62788726).

The spelling of 22144604 in words is "twenty-two million, one hundred forty-four thousand, six hundred four".