12871632 has 40 divisors (see below), whose sum is σ = 33425440. Its totient is φ = 4268160.

The previous prime is 12871631. The next prime is 12871637. The reversal of 12871632 is 23617821.

It is a self number, because there is not a number n which added to its sum of digits gives 12871632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12871631) 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 7 ways as a sum of consecutive naturals, for example, 10407 + ... + 11577.

It is an arithmetic number, because the mean of its divisors is an integer number (835636).

Almost surely, 2^12871632 is an apocalyptic number.

12871632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12871632 is an abundant number, since it is smaller than the sum of its proper divisors (20553808).

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

12871632 is a wasteful number, since it uses less digits than its factorization.

12871632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411 (or 1405 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 12871632 is about 3587.7056735468. The cubic root of 12871632 is about 234.3569684972.

The spelling of 12871632 in words is "twelve million, eight hundred seventy-one thousand, six hundred thirty-two".