12090864 has 20 divisors (see below), whose sum is σ = 31234856. Its totient is φ = 4030272.

The previous prime is 12090863. The next prime is 12090889. The reversal of 12090864 is 46809021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12090863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125899 + ... + 125994.

Almost surely, 2^12090864 is an apocalyptic number.

It is an amenable number.

12090864 is an abundant number, since it is smaller than the sum of its proper divisors (19143992).

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

12090864 is a wasteful number, since it uses less digits than its factorization.

12090864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251904 (or 251898 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 12090864 is about 3477.1919705417. The cubic root of 12090864 is about 229.5192478671.

Adding to 12090864 its reverse (46809021), we get a palindrome (58899885).

The spelling of 12090864 in words is "twelve million, ninety thousand, eight hundred sixty-four".