12043616 has 72 divisors (see below), whose sum is σ = 27392904. Its totient is φ = 5191680.

The previous prime is 12043607. The next prime is 12043621. The reversal of 12043616 is 61634021.

It is a happy number.

12043616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12043591 and 12043600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91871 + ... + 92001.

It is an arithmetic number, because the mean of its divisors is an integer number (380457).

Almost surely, 2^12043616 is an apocalyptic number.

12043616 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 12043616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13696452).

12043616 is an abundant number, since it is smaller than the sum of its proper divisors (15349288).

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

12043616 is a wasteful number, since it uses less digits than its factorization.

12043616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 12043616 is about 3470.3913324004. The cubic root of 12043616 is about 229.2198901100.

Adding to 12043616 its reverse (61634021), we get a palindrome (73677637).

The spelling of 12043616 in words is "twelve million, forty-three thousand, six hundred sixteen".