26826013 has 4 divisors (see below), whose sum is σ = 27480348. Its totient is φ = 26171680.

The previous prime is 26825993. The next prime is 26826047. The reversal of 26826013 is 31062862.

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 4149369 + 22676644 = 2037^2 + 4762^2 .

It is a cyclic number.

It is not a de Polignac number, because 26826013 - 2⁹ = 26825501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26826053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327106 + ... + 327187.

It is an arithmetic number, because the mean of its divisors is an integer number (6870087).

Almost surely, 2^26826013 is an apocalyptic number.

It is an amenable number.

26826013 is a deficient number, since it is larger than the sum of its proper divisors (654335).

26826013 is an equidigital number, since it uses as much as digits as its factorization.

26826013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654334.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 26826013 is about 5179.3834575169. The cubic root of 26826013 is about 299.3542145718.

Adding to 26826013 its reverse (31062862), we get a palindrome (57888875).

The spelling of 26826013 in words is "twenty-six million, eight hundred twenty-six thousand, thirteen".