12287868 has 24 divisors (see below), whose sum is σ = 29283072. Its totient is φ = 4008624.

The previous prime is 12287861. The next prime is 12287879. The reversal of 12287868 is 86878221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12287861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10330 + ... + 11457.

It is an arithmetic number, because the mean of its divisors is an integer number (1220128).

Almost surely, 2^12287868 is an apocalyptic number.

It is an amenable number.

12287868 is an abundant number, since it is smaller than the sum of its proper divisors (16995204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12287868 is a wasteful number, since it uses less digits than its factorization.

12287868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21841 (or 21839 counting only the distinct ones).

The product of its digits is 86016, while the sum is 42.

The square root of 12287868 is about 3505.4055400196. The cubic root of 12287868 is about 230.7591049574.

It can be divided in two parts, 122 and 87868, that added together give a triangular number (87990 = T₄₁₉).

The spelling of 12287868 in words is "twelve million, two hundred eighty-seven thousand, eight hundred sixty-eight".