12156794 has 16 divisors (see below), whose sum is σ = 20170248. Its totient is φ = 5458752.

The previous prime is 12156791. The next prime is 12156797. The reversal of 12156794 is 49765121.

12156794 = 198² + 199² + ... + 353².

It is an interprime number because it is at equal distance from previous prime (12156791) and next prime (12156797).

It can be written as a sum of positive squares in 4 ways, for example, as 8334769 + 3822025 = 2887^2 + 1955^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12156791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5357 + ... + 7280.

Almost surely, 2^12156794 is an apocalyptic number.

12156794 is a deficient number, since it is larger than the sum of its proper divisors (8013454).

12156794 is a wasteful number, since it uses less digits than its factorization.

12156794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12689.

The product of its digits is 15120, while the sum is 35.

The square root of 12156794 is about 3486.6594327522. The cubic root of 12156794 is about 229.9356719911.

The spelling of 12156794 in words is "twelve million, one hundred fifty-six thousand, seven hundred ninety-four".