12828779 has 6 divisors (see below), whose sum is σ = 13411356. Its totient is φ = 12270500.

The previous prime is 12828769. The next prime is 12828787. The reversal of 12828779 is 97782821.

It is not a de Polignac number, because 12828779 - 2⁴ = 12828763 is a prime.

It is a super-3 number, since 3×12828779³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12828709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11597 + ... + 12654.

It is an arithmetic number, because the mean of its divisors is an integer number (2235226).

Almost surely, 2^12828779 is an apocalyptic number.

12828779 is a deficient number, since it is larger than the sum of its proper divisors (582577).

12828779 is an equidigital number, since it uses as much as digits as its factorization.

12828779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24297 (or 24274 counting only the distinct ones).

The product of its digits is 112896, while the sum is 44.

The square root of 12828779 is about 3581.7284933395. The cubic root of 12828779 is about 234.0966009704.

The spelling of 12828779 in words is "twelve million, eight hundred twenty-eight thousand, seven hundred seventy-nine".