12185530 has 16 divisors (see below), whose sum is σ = 25067520. Its totient is φ = 4177872.

The previous prime is 12185527. The next prime is 12185567. The reversal of 12185530 is 3558121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12185495 and 12185504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86970 + ... + 87109.

It is an arithmetic number, because the mean of its divisors is an integer number (1566720).

Almost surely, 2^12185530 is an apocalyptic number.

12185530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12185530 is an abundant number, since it is smaller than the sum of its proper divisors (12881990).

12185530 is a wasteful number, since it uses less digits than its factorization.

12185530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174093.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 12185530 is about 3490.7778502792. Note that the first 3 decimals coincide. The cubic root of 12185530 is about 230.1167019601.

The spelling of 12185530 in words is "twelve million, one hundred eighty-five thousand, five hundred thirty".