12017868 has 24 divisors (see below), whose sum is σ = 29261568. Its totient is φ = 3831696.

The previous prime is 12017867. The next prime is 12017897. The reversal of 12017868 is 86871021.

It is a happy number.

12017868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12017867) 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, 21496 + ... + 22047.

It is an arithmetic number, because the mean of its divisors is an integer number (1219232).

Almost surely, 2^12017868 is an apocalyptic number.

It is an amenable number.

12017868 is an abundant number, since it is smaller than the sum of its proper divisors (17243700).

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

12017868 is a wasteful number, since it uses less digits than its factorization.

12017868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43573 (or 43571 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 12017868 is about 3466.6796794628. The cubic root of 12017868 is about 229.0564241251.

Adding to 12017868 its reverse (86871021), we get a palindrome (98888889).

The spelling of 12017868 in words is "twelve million, seventeen thousand, eight hundred sixty-eight".