12871284 has 24 divisors (see below), whose sum is σ = 31614240. Its totient is φ = 4064544.

The previous prime is 12871259. The next prime is 12871291. The reversal of 12871284 is 48217821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 27999 + ... + 28454.

It is an arithmetic number, because the mean of its divisors is an integer number (1317260).

Almost surely, 2^12871284 is an apocalyptic number.

It is an amenable number.

12871284 is an abundant number, since it is smaller than the sum of its proper divisors (18742956).

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

12871284 is a wasteful number, since it uses less digits than its factorization.

12871284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56479 (or 56477 counting only the distinct ones).

The product of its digits is 7168, while the sum is 33.

The square root of 12871284 is about 3587.6571742573. The cubic root of 12871284 is about 234.3548564377.

The spelling of 12871284 in words is "twelve million, eight hundred seventy-one thousand, two hundred eighty-four".