26380013 has 4 divisors (see below), whose sum is σ = 28778208. Its totient is φ = 23981820.

The previous prime is 26380009. The next prime is 26380031. The reversal of 26380013 is 31008362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26380013 - 2² = 26380009 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 (26380063) 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, 1199081 + ... + 1199102.

It is an arithmetic number, because the mean of its divisors is an integer number (7194552).

Almost surely, 2^26380013 is an apocalyptic number.

It is an amenable number.

26380013 is a deficient number, since it is larger than the sum of its proper divisors (2398195).

26380013 is a wasteful number, since it uses less digits than its factorization.

26380013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2398194.

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

The square root of 26380013 is about 5136.1476808986. The cubic root of 26380013 is about 297.6859482948.

Adding to 26380013 its reverse (31008362), we get a palindrome (57388375).

The spelling of 26380013 in words is "twenty-six million, three hundred eighty thousand, thirteen".