12684448 has 48 divisors (see below), whose sum is σ = 30227904. Its totient is φ = 5114880.

The previous prime is 12684421. The next prime is 12684449. The reversal of 12684448 is 84448621.

It is not an unprimeable number, because it can be changed into a prime (12684449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2143 + ... + 5473.

It is an arithmetic number, because the mean of its divisors is an integer number (629748).

Almost surely, 2^12684448 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 12684448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15113952).

12684448 is an abundant number, since it is smaller than the sum of its proper divisors (17543456).

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

12684448 is a wasteful number, since it uses less digits than its factorization.

12684448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3365 (or 3357 counting only the distinct ones).

The product of its digits is 49152, while the sum is 37.

The square root of 12684448 is about 3561.5232696137. The cubic root of 12684448 is about 233.2153816545.

The spelling of 12684448 in words is "twelve million, six hundred eighty-four thousand, four hundred forty-eight".