26260013 has 4 divisors (see below), whose sum is σ = 28280028. Its totient is φ = 24240000.

The previous prime is 26259991. The next prime is 26260021. The reversal of 26260013 is 31006262.

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 4338889 + 21921124 = 2083^2 + 4682^2 .

It is a cyclic number.

It is not a de Polignac number, because 26260013 - 2⁶ = 26259949 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 (26260063) 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 in 3 ways as a sum of consecutive naturals, for example, 1009988 + ... + 1010013.

It is an arithmetic number, because the mean of its divisors is an integer number (7070007).

Almost surely, 2^26260013 is an apocalyptic number.

It is an amenable number.

26260013 is a deficient number, since it is larger than the sum of its proper divisors (2020015).

26260013 is a wasteful number, since it uses less digits than its factorization.

26260013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020014.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 26260013 is about 5124.4524585559. The cubic root of 26260013 is about 297.2338810824.

Adding to 26260013 its reverse (31006262), we get a palindrome (57266275).

The spelling of 26260013 in words is "twenty-six million, two hundred sixty thousand, thirteen".