26518 has 4 divisors (see below), whose sum is σ = 39780. Its totient is φ = 13258.

The previous prime is 26513. The next prime is 26539. The reversal of 26518 is 81562.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 15.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6628 + ... + 6631.

It is an arithmetic number, because the mean of its divisors is an integer number (9945).

2²⁶⁵¹⁸ is an apocalyptic number.

26518 is a deficient number, since it is larger than the sum of its proper divisors (13262).

26518 is a wasteful number, since it uses less digits than its factorization.

26518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13261.

The product of its digits is 480, while the sum is 22.

The square root of 26518 is about 162.8434831364. The cubic root of 26518 is about 29.8204085235.

The spelling of 26518 in words is "twenty-six thousand, five hundred eighteen".