12528791 has 8 divisors (see below), whose sum is σ = 13714704. Its totient is φ = 11350720.

The previous prime is 12528773. The next prime is 12528793. The reversal of 12528791 is 19782521.

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

It is a cyclic number.

It is not a de Polignac number, because 12528791 - 2¹⁴ = 12512407 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 (12528793) 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, 1691 + ... + 5283.

It is an arithmetic number, because the mean of its divisors is an integer number (1714338).

Almost surely, 2^12528791 is an apocalyptic number.

12528791 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12528791 is a deficient number, since it is larger than the sum of its proper divisors (1185913).

12528791 is a wasteful number, since it uses less digits than its factorization.

12528791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3921.

The product of its digits is 10080, while the sum is 35.

The square root of 12528791 is about 3539.6032263518. The cubic root of 12528791 is about 232.2574863671.

The spelling of 12528791 in words is "twelve million, five hundred twenty-eight thousand, seven hundred ninety-one".