26320417 has 2 divisors, whose sum is σ = 26320418. Its totient is φ = 26320416.

The previous prime is 26320409. The next prime is 26320421. The reversal of 26320417 is 71402362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25796241 + 524176 = 5079^2 + 724^2 .

It is a cyclic number.

It is not a de Polignac number, because 26320417 - 2³ = 26320409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26320391 and 26320400.

It is not a weakly prime, because it can be changed into another prime (26320117) 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 as a sum of consecutive naturals, namely, 13160208 + 13160209.

It is an arithmetic number, because the mean of its divisors is an integer number (13160209).

Almost surely, 2^26320417 is an apocalyptic number.

It is an amenable number.

26320417 is a deficient number, since it is larger than the sum of its proper divisors (1).

26320417 is an equidigital number, since it uses as much as digits as its factorization.

26320417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 26320417 is about 5130.3427760726. The cubic root of 26320417 is about 297.4616083971.

Adding to 26320417 its reverse (71402362), we get a palindrome (97722779).

The spelling of 26320417 in words is "twenty-six million, three hundred twenty thousand, four hundred seventeen".