12784887 has 12 divisors (see below), whose sum is σ = 18780840. Its totient is φ = 8378448.

The previous prime is 12784847. The next prime is 12784897. The reversal of 12784887 is 78848721.

It is not a de Polignac number, because 12784887 - 2⁶ = 12784823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12784817) 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 11 ways as a sum of consecutive naturals, for example, 11508 + ... + 12569.

It is an arithmetic number, because the mean of its divisors is an integer number (1565070).

Almost surely, 2^12784887 is an apocalyptic number.

12784887 is a deficient number, since it is larger than the sum of its proper divisors (5995953).

12784887 is a wasteful number, since it uses less digits than its factorization.

12784887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24142 (or 24139 counting only the distinct ones).

The product of its digits is 200704, while the sum is 45.

The square root of 12784887 is about 3575.5960342298. The cubic root of 12784887 is about 233.8293188830.

The spelling of 12784887 in words is "twelve million, seven hundred eighty-four thousand, eight hundred eighty-seven".