22188345 has 16 divisors (see below), whose sum is σ = 36461760. Its totient is φ = 11513664.

The previous prime is 22188329. The next prime is 22188347. The reversal of 22188345 is 54388122.

It is not a de Polignac number, because 22188345 - 2⁴ = 22188329 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22188347) 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, 19435 + ... + 20544.

It is an arithmetic number, because the mean of its divisors is an integer number (2278860).

Almost surely, 2^22188345 is an apocalyptic number.

It is an amenable number.

22188345 is a deficient number, since it is larger than the sum of its proper divisors (14273415).

22188345 is a wasteful number, since it uses less digits than its factorization.

22188345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40024.

The product of its digits is 15360, while the sum is 33.

The square root of 22188345 is about 4710.4506153870. The cubic root of 22188345 is about 281.0012833281.

The spelling of 22188345 in words is "twenty-two million, one hundred eighty-eight thousand, three hundred forty-five".