12132432 has 60 divisors (see below), whose sum is σ = 36571444. Its totient is φ = 3732480.

The previous prime is 12132401. The next prime is 12132443. The reversal of 12132432 is 23423121.

It can be written as a sum of positive squares in 2 ways, for example, as 7096896 + 5035536 = 2664^2 + 2244^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1369 + ... + 5112.

Almost surely, 2^12132432 is an apocalyptic number.

12132432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12132432 is an abundant number, since it is smaller than the sum of its proper divisors (24439012).

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

12132432 is a wasteful number, since it uses less digits than its factorization.

12132432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6508 (or 6499 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 12132432 is about 3483.1640788226. The cubic root of 12132432 is about 229.7819736034.

Adding to 12132432 its reverse (23423121), we get a palindrome (35555553).

The spelling of 12132432 in words is "twelve million, one hundred thirty-two thousand, four hundred thirty-two".