12822987 has 16 divisors (see below), whose sum is σ = 17677440. Its totient is φ = 8262912.

The previous prime is 12822973. The next prime is 12822989. The reversal of 12822987 is 78922821.

It is not a de Polignac number, because 12822987 - 2⁸ = 12822731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12822989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13339 + ... + 14267.

It is an arithmetic number, because the mean of its divisors is an integer number (1104840).

Almost surely, 2^12822987 is an apocalyptic number.

12822987 is a deficient number, since it is larger than the sum of its proper divisors (4854453).

12822987 is a wasteful number, since it uses less digits than its factorization.

12822987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082.

The product of its digits is 32256, while the sum is 39.

The square root of 12822987 is about 3580.9198538923. The cubic root of 12822987 is about 234.0613653070.

The spelling of 12822987 in words is "twelve million, eight hundred twenty-two thousand, nine hundred eighty-seven".