12785828 has 18 divisors (see below), whose sum is σ = 24595158. Its totient is φ = 5811520.

The previous prime is 12785821. The next prime is 12785863. The reversal of 12785828 is 82858721.

It can be written as a sum of positive squares in only one way, i.e., 8952064 + 3833764 = 2992^2 + 1958^2 .

It is not an unprimeable number, because it can be changed into a prime (12785821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12725 + ... + 13692.

Almost surely, 2^12785828 is an apocalyptic number.

It is an amenable number.

12785828 is a deficient number, since it is larger than the sum of its proper divisors (11809330).

12785828 is a wasteful number, since it uses less digits than its factorization.

12785828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26443 (or 26430 counting only the distinct ones).

The product of its digits is 71680, while the sum is 41.

The square root of 12785828 is about 3575.7276182618. The cubic root of 12785828 is about 233.8350555519.

The spelling of 12785828 in words is "twelve million, seven hundred eighty-five thousand, eight hundred twenty-eight".