12811058 has 16 divisors (see below), whose sum is σ = 20765976. Its totient is φ = 5892480.

The previous prime is 12811049. The next prime is 12811061. The reversal of 12811058 is 85011821.

It can be written as a sum of positive squares in 4 ways, for example, as 11607649 + 1203409 = 3407^2 + 1097^2 .

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9038 + ... + 10358.

Almost surely, 2^12811058 is an apocalyptic number.

12811058 is a deficient number, since it is larger than the sum of its proper divisors (7954918).

12811058 is a wasteful number, since it uses less digits than its factorization.

12811058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709.

The product of its (nonzero) digits is 640, while the sum is 26.

The square root of 12811058 is about 3579.2538328540. The cubic root of 12811058 is about 233.9887617268.

Adding to 12811058 its reverse (85011821), we get a palindrome (97822879).

The spelling of 12811058 in words is "twelve million, eight hundred eleven thousand, fifty-eight".