12169287 has 24 divisors (see below), whose sum is σ = 19341504. Its totient is φ = 7326144.

The previous prime is 12169279. The next prime is 12169307. The reversal of 12169287 is 78296121.

12169287 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12169287 - 2³ = 12169279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12161287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4393 + ... + 6605.

It is an arithmetic number, because the mean of its divisors is an integer number (805896).

Almost surely, 2^12169287 is an apocalyptic number.

12169287 is a deficient number, since it is larger than the sum of its proper divisors (7172217).

12169287 is a wasteful number, since it uses less digits than its factorization.

12169287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2279 (or 2276 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 12169287 is about 3488.4505156301. The cubic root of 12169287 is about 230.0144099352.

The spelling of 12169287 in words is "twelve million, one hundred sixty-nine thousand, two hundred eighty-seven".