22252144 has 10 divisors (see below), whose sum is σ = 43113560. Its totient is φ = 11126064.

The previous prime is 22252127. The next prime is 22252147. The reversal of 22252144 is 44125222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22252147) 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 as a sum of consecutive naturals, namely, 695364 + ... + 695395.

It is an arithmetic number, because the mean of its divisors is an integer number (4311356).

Almost surely, 2^22252144 is an apocalyptic number.

It is an amenable number.

22252144 is a deficient number, since it is larger than the sum of its proper divisors (20861416).

22252144 is a wasteful number, since it uses less digits than its factorization.

22252144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390767 (or 1390761 counting only the distinct ones).

The product of its digits is 1280, while the sum is 22.

The square root of 22252144 is about 4717.2178240993. The cubic root of 22252144 is about 281.2703501983.

Adding to 22252144 its reverse (44125222), we get a palindrome (66377366).

The spelling of 22252144 in words is "twenty-two million, two hundred fifty-two thousand, one hundred forty-four".