12528018 has 24 divisors (see below), whose sum is σ = 27289548. Its totient is φ = 4153632.

The previous prime is 12527987. The next prime is 12528037. The reversal of 12528018 is 81082521.

It can be written as a sum of positive squares in 2 ways, for example, as 9715689 + 2812329 = 3117^2 + 1677^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12527982 and 12528000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1780 + ... + 5312.

Almost surely, 2^12528018 is an apocalyptic number.

12528018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12528018 is an abundant number, since it is smaller than the sum of its proper divisors (14761530).

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

12528018 is a wasteful number, since it uses less digits than its factorization.

12528018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3738 (or 3735 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 12528018 is about 3539.4940316379. The cubic root of 12528018 is about 232.2527096697.

The spelling of 12528018 in words is "twelve million, five hundred twenty-eight thousand, eighteen".