26080013 has 4 divisors (see below), whose sum is σ = 26090268. Its totient is φ = 26069760.

The previous prime is 26080009. The next prime is 26080031. The reversal of 26080013 is 31008062.

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 18003049 + 8076964 = 4243^2 + 2842^2 .

It is a cyclic number.

It is not a de Polignac number, because 26080013 - 2² = 26080009 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 (26080063) 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, 1883 + ... + 7463.

It is an arithmetic number, because the mean of its divisors is an integer number (6522567).

Almost surely, 2^26080013 is an apocalyptic number.

It is an amenable number.

26080013 is a deficient number, since it is larger than the sum of its proper divisors (10255).

26080013 is an equidigital number, since it uses as much as digits as its factorization.

26080013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10254.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 26080013 is about 5106.8594067196. The cubic root of 26080013 is about 296.5531907602.

Adding to 26080013 its reverse (31008062), we get a palindrome (57088075).

The spelling of 26080013 in words is "twenty-six million, eighty thousand, thirteen".