12489156 has 81 divisors (see below), whose sum is σ = 34428303. Its totient is φ = 3816720.

The previous prime is 12489151. The next prime is 12489157. The reversal of 12489156 is 65198421.

The square root of 12489156 is 3534.

It is a perfect power (a square), and thus also a powerful number.

12489156 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12489156.

It is not an unprimeable number, because it can be changed into a prime (12489151) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 402861 + ... + 402891.

Almost surely, 2^12489156 is an apocalyptic number.

12489156 is the 3534-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12489156

12489156 is an abundant number, since it is smaller than the sum of its proper divisors (21939147).

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

12489156 is a wasteful number, since it uses less digits than its factorization.

12489156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 55 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The cubic root of 12489156 is about 232.0123110788.

Multiplying 12489156 by its sum of digits (36), we get a square (449609616 = 21204²).

12489156 divided by its sum of digits (36) gives a square (346921 = 589²).

It can be divided in two parts, 1248 and 9156, that added together give a square (10404 = 102²).

The spelling of 12489156 in words is "twelve million, four hundred eighty-nine thousand, one hundred fifty-six".