12445456 has 20 divisors (see below), whose sum is σ = 25382800. Its totient is φ = 5895072.

The previous prime is 12445441. The next prime is 12445469. The reversal of 12445456 is 65454421.

It is a happy number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 20166 + ... + 20773.

It is an arithmetic number, because the mean of its divisors is an integer number (1269140).

Almost surely, 2^12445456 is an apocalyptic number.

12445456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12445456 is an abundant number, since it is smaller than the sum of its proper divisors (12937344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12445456 is a wasteful number, since it uses less digits than its factorization.

12445456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40966 (or 40960 counting only the distinct ones).

The product of its digits is 19200, while the sum is 31.

The square root of 12445456 is about 3527.8117863628. The cubic root of 12445456 is about 231.7413884069.

Adding to 12445456 its reverse (65454421), we get a palindrome (77899877).

The spelling of 12445456 in words is "twelve million, four hundred forty-five thousand, four hundred fifty-six".