12890826 has 40 divisors (see below), whose sum is σ = 31112004. Its totient is φ = 3965760.

The previous prime is 12890821. The next prime is 12890861. The reversal of 12890826 is 62809821.

It can be written as a sum of positive squares in 2 ways, for example, as 10791225 + 2099601 = 3285^2 + 1449^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12890821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 955 + ... + 5166.

Almost surely, 2^12890826 is an apocalyptic number.

12890826 is an abundant number, since it is smaller than the sum of its proper divisors (18221178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12890826 is a wasteful number, since it uses less digits than its factorization.

12890826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6148 (or 6139 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 12890826 is about 3590.3796456642. The cubic root of 12890826 is about 234.4734006015.

The spelling of 12890826 in words is "twelve million, eight hundred ninety thousand, eight hundred twenty-six".