12865828 has 6 divisors (see below), whose sum is σ = 22515206. Its totient is φ = 6432912.

The previous prime is 12865813. The next prime is 12865829. The reversal of 12865828 is 82856821.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11075584 + 1790244 = 3328^2 + 1338^2 .

It is not an unprimeable number, because it can be changed into a prime (12865829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1608225 + ... + 1608232.

Almost surely, 2^12865828 is an apocalyptic number.

It is an amenable number.

12865828 is a deficient number, since it is larger than the sum of its proper divisors (9649378).

12865828 is a wasteful number, since it uses less digits than its factorization.

12865828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3216461 (or 3216459 counting only the distinct ones).

The product of its digits is 61440, while the sum is 40.

The square root of 12865828 is about 3586.8967088557. The cubic root of 12865828 is about 234.3217382498.

It can be divided in two parts, 128 and 65828, that added together give a palindrome (65956).

The spelling of 12865828 in words is "twelve million, eight hundred sixty-five thousand, eight hundred twenty-eight".