12426447 has 16 divisors (see below), whose sum is σ = 18282240. Its totient is φ = 7444800.

The previous prime is 12426431. The next prime is 12426481. The reversal of 12426447 is 74462421.

It is not a de Polignac number, because 12426447 - 2⁴ = 12426431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12426047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 822 + ... + 5052.

It is an arithmetic number, because the mean of its divisors is an integer number (1142640).

Almost surely, 2^12426447 is an apocalyptic number.

12426447 is a deficient number, since it is larger than the sum of its proper divisors (5855793).

12426447 is a wasteful number, since it uses less digits than its factorization.

12426447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4334.

The product of its digits is 10752, while the sum is 30.

The square root of 12426447 is about 3525.1165938164. The cubic root of 12426447 is about 231.6233421965.

Adding to 12426447 its reverse (74462421), we get a palindrome (86888868).

The spelling of 12426447 in words is "twelve million, four hundred twenty-six thousand, four hundred forty-seven".