12116538 has 96 divisors (see below), whose sum is σ = 32438016. Its totient is φ = 3193344.

The previous prime is 12116527. The next prime is 12116539. The reversal of 12116538 is 83561121.

12116538 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 653 + 8 = 666.

12116538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12116539) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 107170 + ... + 107282.

It is an arithmetic number, because the mean of its divisors is an integer number (337896).

Almost surely, 2^12116538 is an apocalyptic number.

12116538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12116538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16219008).

12116538 is an abundant number, since it is smaller than the sum of its proper divisors (20321478).

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

12116538 is a wasteful number, since it uses less digits than its factorization.

12116538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 185 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 12116538 is about 3480.8817848356. The cubic root of 12116538 is about 229.6815883804.

Adding to 12116538 its reverse (83561121), we get a palindrome (95677659).

The spelling of 12116538 in words is "twelve million, one hundred sixteen thousand, five hundred thirty-eight".