22656449 has 4 divisors (see below), whose sum is σ = 23641536. Its totient is φ = 21671364.

The previous prime is 22656401. The next prime is 22656451. The reversal of 22656449 is 94465622.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94465622 = 2 ⋅47232811.

It is a cyclic number.

It is not a de Polignac number, because 22656449 - 2¹² = 22652353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22616449) 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, 492509 + ... + 492554.

It is an arithmetic number, because the mean of its divisors is an integer number (5910384).

Almost surely, 2^22656449 is an apocalyptic number.

It is an amenable number.

22656449 is a deficient number, since it is larger than the sum of its proper divisors (985087).

22656449 is an equidigital number, since it uses as much as digits as its factorization.

22656449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985086.

The product of its digits is 103680, while the sum is 38.

The square root of 22656449 is about 4759.8790951032. The cubic root of 22656449 is about 282.9636274513.

The spelling of 22656449 in words is "twenty-two million, six hundred fifty-six thousand, four hundred forty-nine".