22556765 has 32 divisors (see below), whose sum is σ = 34594560. Its totient is φ = 13708800.

The previous prime is 22556761. The next prime is 22556789. The reversal of 22556765 is 56765522.

It is not a de Polignac number, because 22556765 - 2² = 22556761 is a prime.

22556765 is a modest number, since divided by 6765 gives 2255 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22556761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15071 + ... + 16499.

It is an arithmetic number, because the mean of its divisors is an integer number (1081080).

Almost surely, 2^22556765 is an apocalyptic number.

It is an amenable number.

22556765 is a deficient number, since it is larger than the sum of its proper divisors (12037795).

22556765 is a wasteful number, since it uses less digits than its factorization.

22556765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493.

The product of its digits is 126000, while the sum is 38.

The square root of 22556765 is about 4749.3962774231. The cubic root of 22556765 is about 282.5480222223.

The spelling of 22556765 in words is "twenty-two million, five hundred fifty-six thousand, seven hundred sixty-five".