12732591 has 16 divisors (see below), whose sum is σ = 17686368. Its totient is φ = 8140800.

The previous prime is 12732589. The next prime is 12732637. The reversal of 12732591 is 19523721.

It is not a de Polignac number, because 12732591 - 2¹ = 12732589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12732521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6655 + ... + 8351.

It is an arithmetic number, because the mean of its divisors is an integer number (1105398).

Almost surely, 2^12732591 is an apocalyptic number.

12732591 is a deficient number, since it is larger than the sum of its proper divisors (4953777).

12732591 is a wasteful number, since it uses less digits than its factorization.

12732591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1802.

The product of its digits is 3780, while the sum is 30.

The square root of 12732591 is about 3568.2756339722. The cubic root of 12732591 is about 233.5100604438.

The spelling of 12732591 in words is "twelve million, seven hundred thirty-two thousand, five hundred ninety-one".