12447232 has 80 divisors (see below), whose sum is σ = 29855232. Its totient is φ = 5068800.

The previous prime is 12447221. The next prime is 12447269. The reversal of 12447232 is 23274421.

It is a happy number.

12447232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12447197 and 12447206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82357 + ... + 82507.

Almost surely, 2^12447232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12447232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14927616).

12447232 is an abundant number, since it is smaller than the sum of its proper divisors (17408000).

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

12447232 is an equidigital number, since it uses as much as digits as its factorization.

12447232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 183 counting only the distinct ones).

The product of its digits is 2688, while the sum is 25.

The square root of 12447232 is about 3528.0634914922. The cubic root of 12447232 is about 231.7524112555.

The spelling of 12447232 in words is "twelve million, four hundred forty-seven thousand, two hundred thirty-two".