22144648 has 32 divisors (see below), whose sum is σ = 43228800. Its totient is φ = 10625472.

The previous prime is 22144631. The next prime is 22144651. The reversal of 22144648 is 84644122.

It is a plaindrome in base 11.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 22911 + ... + 23857.

It is an arithmetic number, because the mean of its divisors is an integer number (1350900).

Almost surely, 2^22144648 is an apocalyptic number.

It is an amenable number.

22144648 is a deficient number, since it is larger than the sum of its proper divisors (21084152).

22144648 is a wasteful number, since it uses less digits than its factorization.

22144648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069 (or 1065 counting only the distinct ones).

The product of its digits is 12288, while the sum is 31.

The square root of 22144648 is about 4705.8100259148. The cubic root of 22144648 is about 280.8166971941.

The spelling of 22144648 in words is "twenty-two million, one hundred forty-four thousand, six hundred forty-eight".