26803013 has 4 divisors (see below), whose sum is σ = 26815308. Its totient is φ = 26790720.

The previous prime is 26803009. The next prime is 26803079. The reversal of 26803013 is 31030862.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 15499969 + 11303044 = 3937^2 + 3362^2 .

It is a cyclic number.

It is not a de Polignac number, because 26803013 - 2² = 26803009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26803013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26803093) 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, 1898 + ... + 7563.

It is an arithmetic number, because the mean of its divisors is an integer number (6703827).

Almost surely, 2^26803013 is an apocalyptic number.

It is an amenable number.

26803013 is a deficient number, since it is larger than the sum of its proper divisors (12295).

26803013 is an equidigital number, since it uses as much as digits as its factorization.

26803013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12294.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 26803013 is about 5177.1626399023. The cubic root of 26803013 is about 299.2686369946.

Adding to 26803013 its reverse (31030862), we get a palindrome (57833875).

The spelling of 26803013 in words is "twenty-six million, eight hundred three thousand, thirteen".