22979644 has 6 divisors (see below), whose sum is σ = 40214384. Its totient is φ = 11489820.

The previous prime is 22979623. The next prime is 22979653. The reversal of 22979644 is 44697922.

It is a self number, because there is not a number n which added to its sum of digits gives 22979644.

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 as a sum of consecutive naturals, namely, 2872452 + ... + 2872459.

Almost surely, 2^22979644 is an apocalyptic number.

It is an amenable number.

22979644 is a deficient number, since it is larger than the sum of its proper divisors (17234740).

22979644 is a wasteful number, since it uses less digits than its factorization.

22979644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5744915 (or 5744913 counting only the distinct ones).

The product of its digits is 217728, while the sum is 43.

The square root of 22979644 is about 4793.7087938255. The cubic root of 22979644 is about 284.3027750243.

The spelling of 22979644 in words is "twenty-two million, nine hundred seventy-nine thousand, six hundred forty-four".