12732271 has 8 divisors (see below), whose sum is σ = 13346784. Its totient is φ = 12122880.

The previous prime is 12732241. The next prime is 12732277. The reversal of 12732271 is 17223721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12732271 - 2⁷ = 12732143 is a prime.

It is a super-2 number, since 2×12732271² = 324221449634882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12732277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4395 + ... + 6691.

It is an arithmetic number, because the mean of its divisors is an integer number (1668348).

Almost surely, 2^12732271 is an apocalyptic number.

12732271 is a deficient number, since it is larger than the sum of its proper divisors (614513).

12732271 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (12732270) it forms an eRAP, since the sums of their prime factors are consecutive (2560 and 2561).

12732271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2561.

The product of its digits is 1176, while the sum is 25.

The square root of 12732271 is about 3568.2307941051. The cubic root of 12732271 is about 233.5081042082.

Adding to 12732271 its reverse (17223721), we get a palindrome (29955992).

The spelling of 12732271 in words is "twelve million, seven hundred thirty-two thousand, two hundred seventy-one".