12007864 has 16 divisors (see below), whose sum is σ = 24561720. Its totient is φ = 5458080.

The previous prime is 12007847. The next prime is 12007871. The reversal of 12007864 is 46870021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68139 + ... + 68314.

Almost surely, 2^12007864 is an apocalyptic number.

It is an amenable number.

12007864 is an abundant number, since it is smaller than the sum of its proper divisors (12553856).

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

12007864 is a wasteful number, since it uses less digits than its factorization.

12007864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136470 (or 136466 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 12007864 is about 3465.2364998655. The cubic root of 12007864 is about 228.9928488833.

Adding to 12007864 its reverse (46870021), we get a palindrome (58877885).

The spelling of 12007864 in words is "twelve million, seven thousand, eight hundred sixty-four".