12308816 has 60 divisors (see below), whose sum is σ = 27662292. Its totient is φ = 5256192.

The previous prime is 12308801. The next prime is 12308819. The reversal of 12308816 is 61880321.

12308816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5569600 + 6739216 = 2360^2 + 2596^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12308819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 208595 + ... + 208653.

Almost surely, 2^12308816 is an apocalyptic number.

12308816 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 12308816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13831146).

12308816 is an abundant number, since it is smaller than the sum of its proper divisors (15353476).

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

12308816 is a wasteful number, since it uses less digits than its factorization.

12308816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 12308816 is about 3508.3922243672. The cubic root of 12308816 is about 230.8901609824.

The spelling of 12308816 in words is "twelve million, three hundred eight thousand, eight hundred sixteen".