12109738 has 12 divisors (see below), whose sum is σ = 18566082. Its totient is φ = 5923880.

The previous prime is 12109697. The next prime is 12109817. The reversal of 12109738 is 83790121.

It can be written as a sum of positive squares in only one way, i.e., 11135569 + 974169 = 3337^2 + 987^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3048 + ... + 5788.

Almost surely, 2^12109738 is an apocalyptic number.

12109738 is a deficient number, since it is larger than the sum of its proper divisors (6456344).

12109738 is an equidigital number, since it uses as much as digits as its factorization.

12109738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2837 (or 2790 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 12109738 is about 3479.9048837576. The cubic root of 12109738 is about 229.6386133142.

Adding to 12109738 its reverse (83790121), we get a palindrome (95899859).

The spelling of 12109738 in words is "twelve million, one hundred nine thousand, seven hundred thirty-eight".