12862161 has 24 divisors (see below), whose sum is σ = 20442240. Its totient is φ = 7743456.

The previous prime is 12862153. The next prime is 12862163. The reversal of 12862161 is 16126821.

It is not a de Polignac number, because 12862161 - 2³ = 12862153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12862163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4330 + ... + 6668.

It is an arithmetic number, because the mean of its divisors is an integer number (851760).

Almost surely, 2^12862161 is an apocalyptic number.

It is an amenable number.

12862161 is a deficient number, since it is larger than the sum of its proper divisors (7580079).

12862161 is a wasteful number, since it uses less digits than its factorization.

12862161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405 (or 2402 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 12862161 is about 3586.3855063281. The cubic root of 12862161 is about 234.2994741182.

Adding to 12862161 its reverse (16126821), we get a palindrome (28988982).

The spelling of 12862161 in words is "twelve million, eight hundred sixty-two thousand, one hundred sixty-one".