12394816 has 56 divisors (see below), whose sum is σ = 28569920. Its totient is φ = 5225472.

The previous prime is 12394813. The next prime is 12394817. The reversal of 12394816 is 61849321.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12394813) 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, 32515 + ... + 32893.

Almost surely, 2^12394816 is an apocalyptic number.

12394816 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 12394816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14284960).

12394816 is an abundant number, since it is smaller than the sum of its proper divisors (16175104).

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

12394816 is an equidigital number, since it uses as much as digits as its factorization.

12394816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471 (or 461 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 12394816 is about 3520.6272168465. The cubic root of 12394816 is about 231.4266460382.

The spelling of 12394816 in words is "twelve million, three hundred ninety-four thousand, eight hundred sixteen".