12871528 has 8 divisors (see below), whose sum is σ = 24134130. Its totient is φ = 6435760.

The previous prime is 12871511. The next prime is 12871543. The reversal of 12871528 is 82517821.

It can be written as a sum of positive squares in only one way, i.e., 12830724 + 40804 = 3582^2 + 202^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×12871528³ (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12871493 and 12871502.

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 as a sum of consecutive naturals, namely, 804463 + ... + 804478.

Almost surely, 2^12871528 is an apocalyptic number.

It is an amenable number.

12871528 is a deficient number, since it is larger than the sum of its proper divisors (11262602).

12871528 is a wasteful number, since it uses less digits than its factorization.

12871528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608947 (or 1608943 counting only the distinct ones).

The product of its digits is 8960, while the sum is 34.

The square root of 12871528 is about 3587.6911795750. The cubic root of 12871528 is about 234.3563373110.

The spelling of 12871528 in words is "twelve million, eight hundred seventy-one thousand, five hundred twenty-eight".