22493864 has 16 divisors (see below), whose sum is σ = 42340320. Its totient is φ = 11203120.

The previous prime is 22493857. The next prime is 22493869. The reversal of 22493864 is 46839422.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22493869) 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, 3242 + ... + 7449.

It is an arithmetic number, because the mean of its divisors is an integer number (2646270).

Almost surely, 2^22493864 is an apocalyptic number.

It is an amenable number.

22493864 is a deficient number, since it is larger than the sum of its proper divisors (19846456).

22493864 is a wasteful number, since it uses less digits than its factorization.

22493864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10960 (or 10956 counting only the distinct ones).

The product of its digits is 82944, while the sum is 38.

The square root of 22493864 is about 4742.7696549590. The cubic root of 22493864 is about 282.2851432330.

The spelling of 22493864 in words is "twenty-two million, four hundred ninety-three thousand, eight hundred sixty-four".