12405448 has 32 divisors (see below), whose sum is σ = 25801920. Its totient is φ = 5544000.

The previous prime is 12405433. The next prime is 12405467. The reversal of 12405448 is 84450421.

12405448 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 4213 + ... + 6523.

It is an arithmetic number, because the mean of its divisors is an integer number (806310).

Almost surely, 2^12405448 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 12405448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12900960).

12405448 is an abundant number, since it is smaller than the sum of its proper divisors (13396472).

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

12405448 is a wasteful number, since it uses less digits than its factorization.

12405448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2389 (or 2385 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 12405448 is about 3522.1368514014. The cubic root of 12405448 is about 231.4927980195.

Adding to 12405448 its reverse (84450421), we get a palindrome (96855869).

The spelling of 12405448 in words is "twelve million, four hundred five thousand, four hundred forty-eight".