12668416 has 40 divisors (see below), whose sum is σ = 25656840. Its totient is φ = 6248448.

The previous prime is 12668413. The next prime is 12668449. The reversal of 12668416 is 61486621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12668413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55695 + ... + 55921.

It is an arithmetic number, because the mean of its divisors is an integer number (641421).

Almost surely, 2^12668416 is an apocalyptic number.

12668416 is a gapful number since it is divisible by the number (16) 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 12668416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12828420).

12668416 is an abundant number, since it is smaller than the sum of its proper divisors (12988424).

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

12668416 is an equidigital number, since it uses as much as digits as its factorization.

12668416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354 (or 338 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 12668416 is about 3559.2718356428. The cubic root of 12668416 is about 233.1170858169.

The spelling of 12668416 in words is "twelve million, six hundred sixty-eight thousand, four hundred sixteen".