12528115 has 4 divisors (see below), whose sum is σ = 15033744. Its totient is φ = 10022488.

The previous prime is 12528107. The next prime is 12528121. The reversal of 12528115 is 51182521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12528115 - 2³ = 12528107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12528115.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1252807 + ... + 1252816.

It is an arithmetic number, because the mean of its divisors is an integer number (3758436).

Almost surely, 2^12528115 is an apocalyptic number.

12528115 is a deficient number, since it is larger than the sum of its proper divisors (2505629).

12528115 is an equidigital number, since it uses as much as digits as its factorization.

12528115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505628.

The product of its digits is 800, while the sum is 25.

The square root of 12528115 is about 3539.5077341348. The cubic root of 12528115 is about 232.2533090849.

The spelling of 12528115 in words is "twelve million, five hundred twenty-eight thousand, one hundred fifteen".