12828782 has 4 divisors (see below), whose sum is σ = 19243176. Its totient is φ = 6414390.

The previous prime is 12828769. The next prime is 12828787. The reversal of 12828782 is 28782821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28782821 = 23 ⋅1251427.

It is a super-3 number, since 3×12828782³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12828787) 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 as a sum of consecutive naturals, namely, 3207194 + ... + 3207197.

It is an arithmetic number, because the mean of its divisors is an integer number (4810794).

Almost surely, 2^12828782 is an apocalyptic number.

12828782 is a deficient number, since it is larger than the sum of its proper divisors (6414394).

12828782 is an equidigital number, since it uses as much as digits as its factorization.

12828782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6414393.

The product of its digits is 28672, while the sum is 38.

The square root of 12828782 is about 3581.7289121317. The cubic root of 12828782 is about 234.0966192182.

The spelling of 12828782 in words is "twelve million, eight hundred twenty-eight thousand, seven hundred eighty-two".