12528690 has 16 divisors (see below), whose sum is σ = 30068928. Its totient is φ = 3340976.

The previous prime is 12528683. The next prime is 12528713. The reversal of 12528690 is 9682521.

It is a super-2 number, since 2×12528690² = 313936146232200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 208782 + ... + 208841.

It is an arithmetic number, because the mean of its divisors is an integer number (1879308).

Almost surely, 2^12528690 is an apocalyptic number.

12528690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12528690 is an abundant number, since it is smaller than the sum of its proper divisors (17540238).

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

12528690 is a wasteful number, since it uses less digits than its factorization.

12528690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417633.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 12528690 is about 3539.5889591872. The cubic root of 12528690 is about 232.2568622561.

The spelling of 12528690 in words is "twelve million, five hundred twenty-eight thousand, six hundred ninety".