12656448 has 168 divisors, whose sum is σ = 43005248. Its totient is φ = 3483648.

The previous prime is 12656443. The next prime is 12656467. The reversal of 12656448 is 84465621.

12656448 is a `hidden beast` number, since 1 + 2 + 6 + 5 + 644 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (46080) is a multiple of the sum of its prime divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12656443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 173340 + ... + 173412.

Almost surely, 2^12656448 is an apocalyptic number.

12656448 is a gapful number since it is divisible by the number (18) 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 12656448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21502624).

12656448 is an abundant number, since it is smaller than the sum of its proper divisors (30348800).

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

12656448 is a wasteful number, since it uses less digits than its factorization.

12656448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 128 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 12656448 is about 3557.5901956240. The cubic root of 12656448 is about 233.0436532134.

The spelling of 12656448 in words is "twelve million, six hundred fifty-six thousand, four hundred forty-eight".