12800026 has 4 divisors (see below), whose sum is σ = 19200042. Its totient is φ = 6400012.

The previous prime is 12800017. The next prime is 12800041. The reversal of 12800026 is 62000821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62000821 = 71 ⋅873251.

It can be written as a sum of positive squares in only one way, i.e., 10400625 + 2399401 = 3225^2 + 1549^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12799976 and 12800012.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3200005 + ... + 3200008.

Almost surely, 2^12800026 is an apocalyptic number.

12800026 is a deficient number, since it is larger than the sum of its proper divisors (6400016).

12800026 is an equidigital number, since it uses as much as digits as its factorization.

12800026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6400015.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 12800026 is about 3577.7123976083. The cubic root of 12800026 is about 233.9215774412.

Adding to 12800026 its reverse (62000821), we get a palindrome (74800847).

The spelling of 12800026 in words is "twelve million, eight hundred thousand, twenty-six".