12723156 has 60 divisors (see below), whose sum is σ = 33663168. Its totient is φ = 4189968.

The previous prime is 12723149. The next prime is 12723167. The reversal of 12723156 is 65132721.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 34485 + ... + 34851.

Almost surely, 2^12723156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12723156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16831584).

12723156 is an abundant number, since it is smaller than the sum of its proper divisors (20940012).

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

12723156 is a wasteful number, since it uses less digits than its factorization.

12723156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490 (or 479 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 12723156 is about 3566.9533218140. The cubic root of 12723156 is about 233.4523682890.

Adding to 12723156 its reverse (65132721), we get a palindrome (77855877).

The spelling of 12723156 in words is "twelve million, seven hundred twenty-three thousand, one hundred fifty-six".