22189545 has 48 divisors (see below), whose sum is σ = 45601920. Its totient is φ = 10139904.

The previous prime is 22189523. The next prime is 22189547. The reversal of 22189545 is 54598122.

It is not a de Polignac number, because 22189545 - 2¹⁵ = 22156777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22189547) 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 47 ways as a sum of consecutive naturals, for example, 7201 + ... + 9809.

It is an arithmetic number, because the mean of its divisors is an integer number (950040).

Almost surely, 2^22189545 is an apocalyptic number.

It is an amenable number.

22189545 is an abundant number, since it is smaller than the sum of its proper divisors (23412375).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22189545 is an equidigital number, since it uses as much as digits as its factorization.

22189545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2636 (or 2624 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 22189545 is about 4710.5779900135. The cubic root of 22189545 is about 281.0063489825.

The spelling of 22189545 in words is "twenty-two million, one hundred eighty-nine thousand, five hundred forty-five".