12528969 has 8 divisors (see below), whose sum is σ = 16785312. Its totient is φ = 8312640.

The previous prime is 12528959. The next prime is 12528979. The reversal of 12528969 is 96982521.

It is an interprime number because it is at equal distance from previous prime (12528959) and next prime (12528979).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12528969 - 2⁵ = 12528937 is a prime.

It is a super-2 number, since 2×12528969² = 313950128405922, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12528969.

It is not an unprimeable number, because it can be changed into a prime (12528959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9264 + ... + 10529.

It is an arithmetic number, because the mean of its divisors is an integer number (2098164).

Almost surely, 2^12528969 is an apocalyptic number.

It is an amenable number.

12528969 is a deficient number, since it is larger than the sum of its proper divisors (4256343).

12528969 is a wasteful number, since it uses less digits than its factorization.

12528969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20007.

The product of its digits is 77760, while the sum is 42.

The square root of 12528969 is about 3539.6283703236. The cubic root of 12528969 is about 232.2585862773.

The spelling of 12528969 in words is "twelve million, five hundred twenty-eight thousand, nine hundred sixty-nine".