12443648 has 84 divisors (see below), whose sum is σ = 29882592. Its totient is φ = 5160960.

The previous prime is 12443647. The next prime is 12443657. The reversal of 12443648 is 84634421.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12443647) 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, 401393 + ... + 401423.

Almost surely, 2^12443648 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 12443648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14941296).

12443648 is an abundant number, since it is smaller than the sum of its proper divisors (17438944).

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

12443648 is an frugal number, since it uses more digits than its factorization.

12443648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71 (or 40 counting only the distinct ones).

The product of its digits is 18432, while the sum is 32.

The square root of 12443648 is about 3527.5555275573. Note that the first 4 decimals coincide. The cubic root of 12443648 is about 231.7301658713.

The spelling of 12443648 in words is "twelve million, four hundred forty-three thousand, six hundred forty-eight".