12830728 has 16 divisors (see below), whose sum is σ = 24193260. Its totient is φ = 6379200.

The previous prime is 12830707. The next prime is 12830729. The reversal of 12830728 is 82703821.

It can be written as a sum of positive squares in 2 ways, for example, as 12830724 + 4 = 3582^2 + 2^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12830728.

It is not an unprimeable number, because it can be changed into a prime (12830729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2983 + ... + 5878.

Almost surely, 2^12830728 is an apocalyptic number.

It is an amenable number.

12830728 is a deficient number, since it is larger than the sum of its proper divisors (11362532).

12830728 is a wasteful number, since it uses less digits than its factorization.

12830728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9048 (or 9044 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 12830728 is about 3582.0005583472. Note that the first 3 decimals coincide. The cubic root of 12830728 is about 234.1084553377.

The spelling of 12830728 in words is "twelve million, eight hundred thirty thousand, seven hundred twenty-eight".