22123856 has 20 divisors (see below), whose sum is σ = 43182132. Its totient is φ = 10980096.

The previous prime is 22123853. The next prime is 22123859. The reversal of 22123856 is 65832122.

It is an interprime number because it is at equal distance from previous prime (22123853) and next prime (22123859).

It can be written as a sum of positive squares in 2 ways, for example, as 12138256 + 9985600 = 3484^2 + 3160^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22123853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2855 + ... + 7238.

Almost surely, 2^22123856 is an apocalyptic number.

It is an amenable number.

22123856 is a deficient number, since it is larger than the sum of its proper divisors (21058276).

22123856 is a wasteful number, since it uses less digits than its factorization.

22123856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10238 (or 10232 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 22123856 is about 4703.6003231567. The cubic root of 22123856 is about 280.7287817591.

Adding to 22123856 its reverse (65832122), we get a palindrome (87955978).

The spelling of 22123856 in words is "twenty-two million, one hundred twenty-three thousand, eight hundred fifty-six".