12732147 has 20 divisors (see below), whose sum is σ = 20023080. Its totient is φ = 8040384.

The previous prime is 12732143. The next prime is 12732163. The reversal of 12732147 is 74123721.

It is a happy number.

12732147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12732147 - 2² = 12732143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 12732147.

It is not an unprimeable number, because it can be changed into a prime (12732143) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2598 + ... + 5675.

It is an arithmetic number, because the mean of its divisors is an integer number (1001154).

Almost surely, 2^12732147 is an apocalyptic number.

12732147 is a deficient number, since it is larger than the sum of its proper divisors (7290933).

12732147 is an equidigital number, since it uses as much as digits as its factorization.

12732147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8304 (or 8295 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 12732147 is about 3568.2134185051. The cubic root of 12732147 is about 233.5073461580.

Adding to 12732147 its reverse (74123721), we get a palindrome (86855868).

The spelling of 12732147 in words is "twelve million, seven hundred thirty-two thousand, one hundred forty-seven".