12287985 has 16 divisors (see below), whose sum is σ = 19768320. Its totient is φ = 6517760.

The previous prime is 12287983. The next prime is 12287993. The reversal of 12287985 is 58978221.

It is not a de Polignac number, because 12287985 - 2¹ = 12287983 is a prime.

It is a Smith number, since the sum of its digits (42) 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 (12287983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 721 + ... + 5009.

It is an arithmetic number, because the mean of its divisors is an integer number (1235520).

Almost surely, 2^12287985 is an apocalyptic number.

12287985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12287985 is a deficient number, since it is larger than the sum of its proper divisors (7480335).

12287985 is a wasteful number, since it uses less digits than its factorization.

12287985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4488.

The product of its digits is 80640, while the sum is 42.

The square root of 12287985 is about 3505.4222284912. The cubic root of 12287985 is about 230.7598373527.

The spelling of 12287985 in words is "twelve million, two hundred eighty-seven thousand, nine hundred eighty-five".