12757028 has 12 divisors (see below), whose sum is σ = 22355340. Its totient is φ = 6369792.

The previous prime is 12756979. The next prime is 12757049. The reversal of 12757028 is 82075721.

It can be written as a sum of positive squares in 2 ways, for example, as 1721344 + 11035684 = 1312^2 + 3322^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12756985 and 12757003.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2000 + ... + 5432.

It is an arithmetic number, because the mean of its divisors is an integer number (1862945).

Almost surely, 2^12757028 is an apocalyptic number.

It is an amenable number.

12757028 is a deficient number, since it is larger than the sum of its proper divisors (9598312).

12757028 is a wasteful number, since it uses less digits than its factorization.

12757028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4366 (or 4364 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 12757028 is about 3571.6981955367. The cubic root of 12757028 is about 233.6593528814.

The spelling of 12757028 in words is "twelve million, seven hundred fifty-seven thousand, twenty-eight".