12135732 has 36 divisors (see below), whose sum is σ = 32941440. Its totient is φ = 3467184.

The previous prime is 12135727. The next prime is 12135749. The reversal of 12135732 is 23753121.

12135732 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 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, 9732 + ... + 10907.

It is an arithmetic number, because the mean of its divisors is an integer number (915040).

Almost surely, 2^12135732 is an apocalyptic number.

12135732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12135732 is an abundant number, since it is smaller than the sum of its proper divisors (20805708).

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

12135732 is a wasteful number, since it uses less digits than its factorization.

12135732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20660 (or 20651 counting only the distinct ones).

The product of its digits is 1260, while the sum is 24.

The square root of 12135732 is about 3483.6377538430. The cubic root of 12135732 is about 229.8028051447.

Adding to 12135732 its reverse (23753121), we get a palindrome (35888853).

It can be divided in two parts, 121 and 35732, that added together give a palindrome (35853).

The spelling of 12135732 in words is "twelve million, one hundred thirty-five thousand, seven hundred thirty-two".