12162156 has 24 divisors (see below), whose sum is σ = 28722624. Its totient is φ = 4004880.

The previous prime is 12162133. The next prime is 12162169. The reversal of 12162156 is 65126121.

12162156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5110 + ... + 7101.

It is an arithmetic number, because the mean of its divisors is an integer number (1196776).

Almost surely, 2^12162156 is an apocalyptic number.

It is an amenable number.

12162156 is an abundant number, since it is smaller than the sum of its proper divisors (16560468).

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

12162156 is a wasteful number, since it uses less digits than its factorization.

12162156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12301 (or 12299 counting only the distinct ones).

The product of its digits is 720, while the sum is 24.

The square root of 12162156 is about 3487.4282788324. The cubic root of 12162156 is about 229.9694729491.

Adding to 12162156 its reverse (65126121), we get a palindrome (77288277).

The spelling of 12162156 in words is "twelve million, one hundred sixty-two thousand, one hundred fifty-six".