22724644 has 12 divisors (see below), whose sum is σ = 41497344. Its totient is φ = 10868264.

The previous prime is 22724609. The next prime is 22724659. The reversal of 22724644 is 44642722.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123412 + ... + 123595.

It is an arithmetic number, because the mean of its divisors is an integer number (3458112).

Almost surely, 2^22724644 is an apocalyptic number.

It is an amenable number.

22724644 is a deficient number, since it is larger than the sum of its proper divisors (18772700).

22724644 is a wasteful number, since it uses less digits than its factorization.

22724644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247034 (or 247032 counting only the distinct ones).

The product of its digits is 21504, while the sum is 31.

The square root of 22724644 is about 4767.0372350130. The cubic root of 22724644 is about 283.2472461260.

The spelling of 22724644 in words is "twenty-two million, seven hundred twenty-four thousand, six hundred forty-four".