12821682 has 16 divisors (see below), whose sum is σ = 25752672. Its totient is φ = 4255680.

The previous prime is 12821681. The next prime is 12821687. The reversal of 12821682 is 28612821.

It is not an unprimeable number, because it can be changed into a prime (12821681) 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 7 ways as a sum of consecutive naturals, for example, 2988 + ... + 5879.

It is an arithmetic number, because the mean of its divisors is an integer number (1609542).

Almost surely, 2^12821682 is an apocalyptic number.

12821682 is an abundant number, since it is smaller than the sum of its proper divisors (12930990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12821682 is a wasteful number, since it uses less digits than its factorization.

12821682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9113.

The product of its digits is 3072, while the sum is 30.

The square root of 12821682 is about 3580.7376335051. The cubic root of 12821682 is about 234.0534248678.

The spelling of 12821682 in words is "twelve million, eight hundred twenty-one thousand, six hundred eighty-two".