12226437 has 8 divisors (see below), whose sum is σ = 18113280. Its totient is φ = 8150940.

The previous prime is 12226433. The next prime is 12226453. The reversal of 12226437 is 73462221.

12226437 is a `hidden beast` number, since 1 + 2 + 226 + 437 = 666.

It is not a de Polignac number, because 12226437 - 2² = 12226433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 452831 = 12226437 / (1 + 2 + 2 + 2 + 6 + 4 + 3 + 7).

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 12226437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12226433) 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 7 ways as a sum of consecutive naturals, for example, 226389 + ... + 226442.

It is an arithmetic number, because the mean of its divisors is an integer number (2264160).

Almost surely, 2^12226437 is an apocalyptic number.

It is an amenable number.

12226437 is a deficient number, since it is larger than the sum of its proper divisors (5886843).

12226437 is an equidigital number, since it uses as much as digits as its factorization.

12226437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452840 (or 452834 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 12226437 is about 3496.6322368817. The cubic root of 12226437 is about 230.3739160467.

Adding to 12226437 its reverse (73462221), we get a palindrome (85688658).

The spelling of 12226437 in words is "twelve million, two hundred twenty-six thousand, four hundred thirty-seven".