22645018 has 16 divisors (see below), whose sum is σ = 38667456. Its totient is φ = 9845440.

The previous prime is 22645009. The next prime is 22645019. The reversal of 22645018 is 81054622.

It is not an unprimeable number, because it can be changed into a prime (22645019) 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 7 ways as a sum of consecutive naturals, for example, 21871 + ... + 22882.

It is an arithmetic number, because the mean of its divisors is an integer number (2416716).

Almost surely, 2^22645018 is an apocalyptic number.

22645018 is a deficient number, since it is larger than the sum of its proper divisors (16022438).

22645018 is a wasteful number, since it uses less digits than its factorization.

22645018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44789.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 22645018 is about 4758.6781778137. The cubic root of 22645018 is about 282.9160309758.

The spelling of 22645018 in words is "twenty-two million, six hundred forty-five thousand, eighteen".