12911828 has 6 divisors (see below), whose sum is σ = 22595706. Its totient is φ = 6455912.

The previous prime is 12911819. The next prime is 12911851. The reversal of 12911828 is 82811921.

It can be written as a sum of positive squares in only one way, i.e., 12517444 + 394384 = 3538^2 + 628^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12911794 and 12911803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1613975 + ... + 1613982.

It is an arithmetic number, because the mean of its divisors is an integer number (3765951).

Almost surely, 2^12911828 is an apocalyptic number.

It is an amenable number.

12911828 is a deficient number, since it is larger than the sum of its proper divisors (9683878).

12911828 is a wasteful number, since it uses less digits than its factorization.

12911828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3227961 (or 3227959 counting only the distinct ones).

The product of its digits is 2304, while the sum is 32.

The square root of 12911828 is about 3593.3032157056. The cubic root of 12911828 is about 234.6006678136.

The spelling of 12911828 in words is "twelve million, nine hundred eleven thousand, eight hundred twenty-eight".