12747432 has 16 divisors (see below), whose sum is σ = 31868640. Its totient is φ = 4249136.

The previous prime is 12747421. The next prime is 12747437. The reversal of 12747432 is 23474721.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 12747432.

It is not an unprimeable number, because it can be changed into a prime (12747437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265548 + ... + 265595.

It is an arithmetic number, because the mean of its divisors is an integer number (1991790).

Almost surely, 2^12747432 is an apocalyptic number.

12747432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12747432 is an abundant number, since it is smaller than the sum of its proper divisors (19121208).

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

12747432 is a wasteful number, since it uses less digits than its factorization.

12747432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531152 (or 531148 counting only the distinct ones).

The product of its digits is 9408, while the sum is 30.

The square root of 12747432 is about 3570.3546042375. The cubic root of 12747432 is about 233.6007509984.

The spelling of 12747432 in words is "twelve million, seven hundred forty-seven thousand, four hundred thirty-two".