22508144 has 20 divisors (see below), whose sum is σ = 43735296. Its totient is φ = 11221632.

The previous prime is 22508137. The next prime is 22508203. The reversal of 22508144 is 44180522.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 4292 + ... + 7964.

Almost surely, 2^22508144 is an apocalyptic number.

It is an amenable number.

22508144 is a deficient number, since it is larger than the sum of its proper divisors (21227152).

22508144 is a wasteful number, since it uses less digits than its factorization.

22508144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4064 (or 4058 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 22508144 is about 4744.2748655616. The cubic root of 22508144 is about 282.3448658774.

Adding to 22508144 its reverse (44180522), we get a palindrome (66688666).

The spelling of 22508144 in words is "twenty-two million, five hundred eight thousand, one hundred forty-four".