12660258 has 32 divisors (see below), whose sum is σ = 28457856. Its totient is φ = 3725568.

The previous prime is 12660229. The next prime is 12660283. The reversal of 12660258 is 85206621.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1735 + ... + 5322.

It is an arithmetic number, because the mean of its divisors is an integer number (889308).

Almost surely, 2^12660258 is an apocalyptic number.

12660258 is an abundant number, since it is smaller than the sum of its proper divisors (15797598).

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

12660258 is a wasteful number, since it uses less digits than its factorization.

12660258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7098.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 12660258 is about 3558.1256301598. The cubic root of 12660258 is about 233.0670354250.

Adding to 12660258 its reverse (85206621), we get a palindrome (97866879).

The spelling of 12660258 in words is "twelve million, six hundred sixty thousand, two hundred fifty-eight".