12327987 has 32 divisors (see below), whose sum is σ = 20090880. Its totient is φ = 6572160.

The previous prime is 12327949. The next prime is 12328007. The reversal of 12327987 is 78972321.

12327987 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 12327987 - 2⁶ = 12327923 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12327937) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18553 + ... + 19205.

It is an arithmetic number, because the mean of its divisors is an integer number (627840).

Almost surely, 2^12327987 is an apocalyptic number.

12327987 is a deficient number, since it is larger than the sum of its proper divisors (7762893).

12327987 is a wasteful number, since it uses less digits than its factorization.

12327987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723.

The product of its digits is 42336, while the sum is 39.

The square root of 12327987 is about 3511.1233245217. The cubic root of 12327987 is about 231.0099693979.

The spelling of 12327987 in words is "twelve million, three hundred twenty-seven thousand, nine hundred eighty-seven".