12243456 has 60 divisors (see below), whose sum is σ = 35348742. Its totient is φ = 4079616.

The previous prime is 12243443. The next prime is 12243457. The reversal of 12243456 is 65434221.

It can be written as a sum of positive squares in only one way, i.e., 9734400 + 2509056 = 3120^2 + 1584^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12243457) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3280 + ... + 5936.

Almost surely, 2^12243456 is an apocalyptic number.

12243456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12243456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17674371).

12243456 is an abundant number, since it is smaller than the sum of its proper divisors (23105286).

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

12243456 is an equidigital number, since it uses as much as digits as its factorization.

12243456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2681 (or 2662 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 12243456 is about 3499.0650179727. The cubic root of 12243456 is about 230.4807587266.

Adding to 12243456 its reverse (65434221), we get a palindrome (77677677).

The spelling of 12243456 in words is "twelve million, two hundred forty-three thousand, four hundred fifty-six".