12204423 has 36 divisors (see below), whose sum is σ = 22158864. Its totient is φ = 6336000.

The previous prime is 12204397. The next prime is 12204431. The reversal of 12204423 is 32440221.

12204423 is a `hidden beast` number, since 1 + 220 + 442 + 3 = 666.

It is not a de Polignac number, because 12204423 - 2⁸ = 12204167 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12204396 and 12204405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12204433) 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 35 ways as a sum of consecutive naturals, for example, 6823 + ... + 8423.

It is an arithmetic number, because the mean of its divisors is an integer number (615524).

Almost surely, 2^12204423 is an apocalyptic number.

12204423 is a deficient number, since it is larger than the sum of its proper divisors (9954441).

12204423 is a wasteful number, since it uses less digits than its factorization.

12204423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636 (or 1622 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 12204423 is about 3493.4829325474. The cubic root of 12204423 is about 230.2355683500.

Adding to 12204423 its reverse (32440221), we get a palindrome (44644644).

The spelling of 12204423 in words is "twelve million, two hundred four thousand, four hundred twenty-three".