12871428 has 24 divisors (see below), whose sum is σ = 30092832. Its totient is φ = 4281984.

The previous prime is 12871423. The next prime is 12871429. The reversal of 12871428 is 82417821.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12871423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9276 + ... + 10572.

It is an arithmetic number, because the mean of its divisors is an integer number (1253868).

Almost surely, 2^12871428 is an apocalyptic number.

It is an amenable number.

12871428 is an abundant number, since it is smaller than the sum of its proper divisors (17221404).

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

12871428 is a wasteful number, since it uses less digits than its factorization.

12871428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131 (or 2129 counting only the distinct ones).

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

The square root of 12871428 is about 3587.6772430084. The cubic root of 12871428 is about 234.3557303980.

The spelling of 12871428 in words is "twelve million, eight hundred seventy-one thousand, four hundred twenty-eight".