22256745 has 16 divisors (see below), whose sum is σ = 40698240. Its totient is φ = 10174464.

The previous prime is 22256743. The next prime is 22256789. The reversal of 22256745 is 54765222.

It is not a de Polignac number, because 22256745 - 2¹ = 22256743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22256743) 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 15 ways as a sum of consecutive naturals, for example, 105880 + ... + 106089.

It is an arithmetic number, because the mean of its divisors is an integer number (2543640).

Almost surely, 2^22256745 is an apocalyptic number.

It is an amenable number.

22256745 is a deficient number, since it is larger than the sum of its proper divisors (18441495).

22256745 is a wasteful number, since it uses less digits than its factorization.

22256745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211984.

The product of its digits is 33600, while the sum is 33.

The square root of 22256745 is about 4717.7054804216. The cubic root of 22256745 is about 281.2897346330.

The spelling of 22256745 in words is "twenty-two million, two hundred fifty-six thousand, seven hundred forty-five".