12156844 has 24 divisors (see below), whose sum is σ = 24611328. Its totient is φ = 5146320.

The previous prime is 12156841. The next prime is 12156847. The reversal of 12156844 is 44865121.

It is an interprime number because it is at equal distance from previous prime (12156841) and next prime (12156847).

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12156841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292 + ... + 4939.

It is an arithmetic number, because the mean of its divisors is an integer number (1025472).

Almost surely, 2^12156844 is an apocalyptic number.

12156844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12156844 is an abundant number, since it is smaller than the sum of its proper divisors (12454484).

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

12156844 is a wasteful number, since it uses less digits than its factorization.

12156844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5325 (or 5323 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 12156844 is about 3486.6666029318. Note that the first 4 decimals coincide. The cubic root of 12156844 is about 229.9359872268.

It can be divided in two parts, 121 and 56844, that added together give a palindrome (56965).

The spelling of 12156844 in words is "twelve million, one hundred fifty-six thousand, eight hundred forty-four".