26438641 has 4 divisors (see below), whose sum is σ = 26513892. Its totient is φ = 26363392.

The previous prime is 26438627. The next prime is 26438647. The reversal of 26438641 is 14683462.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3254416 + 23184225 = 1804^2 + 4815^2 .

It is a cyclic number.

It is not a de Polignac number, because 26438641 - 2⁷ = 26438513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26438597 and 26438606.

It is not an unprimeable number, because it can be changed into a prime (26438647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37096 + ... + 37801.

It is an arithmetic number, because the mean of its divisors is an integer number (6628473).

Almost surely, 2^26438641 is an apocalyptic number.

It is an amenable number.

26438641 is a deficient number, since it is larger than the sum of its proper divisors (75251).

26438641 is an equidigital number, since it uses as much as digits as its factorization.

26438641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75250.

The product of its digits is 27648, while the sum is 34.

The square root of 26438641 is about 5141.8519037405. The cubic root of 26438641 is about 297.9063148592.

The spelling of 26438641 in words is "twenty-six million, four hundred thirty-eight thousand, six hundred forty-one".