22185423 has 12 divisors (see below), whose sum is σ = 34510840. Its totient is φ = 13652496.

The previous prime is 22185419. The next prime is 22185451. The reversal of 22185423 is 32458122.

It is not a de Polignac number, because 22185423 - 2² = 22185419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22185413) 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 11 ways as a sum of consecutive naturals, for example, 94693 + ... + 94926.

Almost surely, 2^22185423 is an apocalyptic number.

22185423 is a deficient number, since it is larger than the sum of its proper divisors (12325417).

22185423 is a wasteful number, since it uses less digits than its factorization.

22185423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189638 (or 189635 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 22185423 is about 4710.1404437660. The cubic root of 22185423 is about 280.9889476958.

The spelling of 22185423 in words is "twenty-two million, one hundred eighty-five thousand, four hundred twenty-three".