12860728 has 8 divisors (see below), whose sum is σ = 24113880. Its totient is φ = 6430360.

The previous prime is 12860723. The next prime is 12860747. The reversal of 12860728 is 82706821.

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

It is a junction number, because it is equal to n+sod(n) for n = 12860693 and 12860702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12860723) by changing a digit.

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, 803788 + ... + 803803.

It is an arithmetic number, because the mean of its divisors is an integer number (3014235).

Almost surely, 2^12860728 is an apocalyptic number.

It is an amenable number.

12860728 is a deficient number, since it is larger than the sum of its proper divisors (11253152).

12860728 is a wasteful number, since it uses less digits than its factorization.

12860728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607597 (or 1607593 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 12860728 is about 3586.1857174441. The cubic root of 12860728 is about 234.2907725318.

The spelling of 12860728 in words is "twelve million, eight hundred sixty thousand, seven hundred twenty-eight".