22756 has 6 divisors (see below), whose sum is σ = 39830. Its totient is φ = 11376.

The previous prime is 22751. The next prime is 22769. The reversal of 22756 is 65722.

It can be written as a sum of positive squares in only one way, i.e., 22500 + 256 = 150^2 + 16^2 .

It is not an unprimeable number, because it can be changed into a prime (22751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2841 + ... + 2848.

2²²⁷⁵⁶ is an apocalyptic number.

It is an amenable number.

22756 is a deficient number, since it is larger than the sum of its proper divisors (17074).

22756 is a wasteful number, since it uses less digits than its factorization.

22756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5693 (or 5691 counting only the distinct ones).

The product of its digits is 840, while the sum is 22.

The square root of 22756 is about 150.8509197851. The cubic root of 22756 is about 28.3377463330.

The spelling of 22756 in words is "twenty-two thousand, seven hundred fifty-six".