12891832 has 8 divisors (see below), whose sum is σ = 24172200. Its totient is φ = 6445912.

The previous prime is 12891829. The next prime is 12891839. The reversal of 12891832 is 23819821.

12891832 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12891839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805732 + ... + 805747.

It is an arithmetic number, because the mean of its divisors is an integer number (3021525).

Almost surely, 2^12891832 is an apocalyptic number.

It is an amenable number.

12891832 is a deficient number, since it is larger than the sum of its proper divisors (11280368).

12891832 is a wasteful number, since it uses less digits than its factorization.

12891832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611485 (or 1611481 counting only the distinct ones).

The product of its digits is 6912, while the sum is 34.

The square root of 12891832 is about 3590.5197395363. The cubic root of 12891832 is about 234.4794998772.

The spelling of 12891832 in words is "twelve million, eight hundred ninety-one thousand, eight hundred thirty-two".