12528077 has 4 divisors (see below), whose sum is σ = 13072800. Its totient is φ = 11983356.

The previous prime is 12528073. The next prime is 12528091. The reversal of 12528077 is 77082521.

12528077 is nontrivially palindromic in base 3.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77082521 = 2347 ⋅32843.

It is a cyclic number.

It is not a de Polignac number, because 12528077 - 2² = 12528073 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12528073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272327 + ... + 272372.

It is an arithmetic number, because the mean of its divisors is an integer number (3268200).

Almost surely, 2^12528077 is an apocalyptic number.

It is an amenable number.

12528077 is a deficient number, since it is larger than the sum of its proper divisors (544723).

12528077 is an equidigital number, since it uses as much as digits as its factorization.

12528077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544722.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 12528077 is about 3539.5023661526. The cubic root of 12528077 is about 232.2530742628.

The spelling of 12528077 in words is "twelve million, five hundred twenty-eight thousand, seventy-seven".