12187827 has 40 divisors (see below), whose sum is σ = 19758816. Its totient is φ = 7458048.

The previous prime is 12187817. The next prime is 12187829. The reversal of 12187827 is 72878121.

It is a happy number.

12187827 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12187827 - 2⁴ = 12187811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12187791 and 12187800.

It is not an unprimeable number, because it can be changed into a prime (12187829) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 72898 + ... + 73064.

Almost surely, 2^12187827 is an apocalyptic number.

12187827 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12187827 is a deficient number, since it is larger than the sum of its proper divisors (7570989).

12187827 is a wasteful number, since it uses less digits than its factorization.

12187827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249 (or 240 counting only the distinct ones).

The product of its digits is 12544, while the sum is 36.

The square root of 12187827 is about 3491.1068445409. The cubic root of 12187827 is about 230.1311602248.

It can be divided in two parts, 1218 and 7827, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 12187827 in words is "twelve million, one hundred eighty-seven thousand, eight hundred twenty-seven".