26638841 has 2 divisors, whose sum is σ = 26638842. Its totient is φ = 26638840.

The previous prime is 26638823. The next prime is 26638891. The reversal of 26638841 is 14883662.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17397241 + 9241600 = 4171^2 + 3040^2 .

It is a cyclic number.

It is not a de Polignac number, because 26638841 - 2¹⁴ = 26622457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26638795 and 26638804.

It is not a weakly prime, because it can be changed into another prime (26638811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13319420 + 13319421.

It is an arithmetic number, because the mean of its divisors is an integer number (13319421).

Almost surely, 2^26638841 is an apocalyptic number.

It is an amenable number.

26638841 is a deficient number, since it is larger than the sum of its proper divisors (1).

26638841 is an equidigital number, since it uses as much as digits as its factorization.

26638841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 38.

The square root of 26638841 is about 5161.2828831600. The cubic root of 26638841 is about 298.6563652101.

The spelling of 26638841 in words is "twenty-six million, six hundred thirty-eight thousand, eight hundred forty-one".