12109736 has 8 divisors (see below), whose sum is σ = 22705770. Its totient is φ = 6054864.

The previous prime is 12109697. The next prime is 12109817. The reversal of 12109736 is 63790121.

12109736 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 only one way, i.e., 11628100 + 481636 = 3410^2 + 694^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 12109699 and 12109708.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 756851 + ... + 756866.

Almost surely, 2^12109736 is an apocalyptic number.

It is an amenable number.

12109736 is a deficient number, since it is larger than the sum of its proper divisors (10596034).

12109736 is a wasteful number, since it uses less digits than its factorization.

12109736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513723 (or 1513719 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 12109736 is about 3479.9045963934. The cubic root of 12109736 is about 229.6386006721.

Adding to 12109736 its reverse (63790121), we get a palindrome (75899857).

The spelling of 12109736 in words is "twelve million, one hundred nine thousand, seven hundred thirty-six".