12432156 has 48 divisors (see below), whose sum is σ = 33317760. Its totient is φ = 3568320.

The previous prime is 12432107. The next prime is 12432163. The reversal of 12432156 is 65123421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30 + ... + 4986.

It is an arithmetic number, because the mean of its divisors is an integer number (694120).

Almost surely, 2^12432156 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 12432156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16658880).

12432156 is an abundant number, since it is smaller than the sum of its proper divisors (20885604).

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

12432156 is a wasteful number, since it uses less digits than its factorization.

12432156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4994 (or 4992 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 12432156 is about 3525.9262612823. The cubic root of 12432156 is about 231.6588078236.

Adding to 12432156 its reverse (65123421), we get a palindrome (77555577).

The spelling of 12432156 in words is "twelve million, four hundred thirty-two thousand, one hundred fifty-six".