22500423 has 20 divisors (see below), whose sum is σ = 36668808. Its totient is φ = 13636080.

The previous prime is 22500419. The next prime is 22500437. The reversal of 22500423 is 32400522.

It is not a de Polignac number, because 22500423 - 2² = 22500419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22500396 and 22500405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22500493) 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 19 ways as a sum of consecutive naturals, for example, 11736 + ... + 13517.

Almost surely, 2^22500423 is an apocalyptic number.

22500423 is a deficient number, since it is larger than the sum of its proper divisors (14168385).

22500423 is a wasteful number, since it uses less digits than its factorization.

22500423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25276 (or 25267 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 22500423 is about 4743.4610781580. The cubic root of 22500423 is about 282.3125778010.

Adding to 22500423 its reverse (32400522), we get a palindrome (54900945).

Subtracting 22500423 from its reverse (32400522), we obtain a palindrome (9900099).

The spelling of 22500423 in words is "twenty-two million, five hundred thousand, four hundred twenty-three".