22056645 has 16 divisors (see below), whose sum is σ = 38005632. Its totient is φ = 10858560.

The previous prime is 22056637. The next prime is 22056649. The reversal of 22056645 is 54665022.

It is not a de Polignac number, because 22056645 - 2³ = 22056637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22056649) 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 15 ways as a sum of consecutive naturals, for example, 56361 + ... + 56750.

It is an arithmetic number, because the mean of its divisors is an integer number (2375352).

Almost surely, 2^22056645 is an apocalyptic number.

It is an amenable number.

22056645 is a deficient number, since it is larger than the sum of its proper divisors (15948987).

22056645 is a wasteful number, since it uses less digits than its factorization.

22056645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113132.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 22056645 is about 4696.4502552460. The cubic root of 22056645 is about 280.4442141087. Note that the first 3 decimals are identical.

It can be divided in two parts, 220 and 56645, that added together give a palindrome (56865).

The spelling of 22056645 in words is "twenty-two million, fifty-six thousand, six hundred forty-five".