26243 has 8 divisors (see below), whose sum is σ = 31488. Its totient is φ = 21384.

The previous prime is 26237. The next prime is 26249. The reversal of 26243 is 34262.

It is a Cunningham number, because it is equal to 162²-1.

It is an interprime number because it is at equal distance from previous prime (26237) and next prime (26249).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26243 - 2⁴ = 26227 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 6⁴ + 2¹³ + 4⁷ + 3⁵ .

It is a Duffinian number.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80 + ... + 242.

It is an arithmetic number, because the mean of its divisors is an integer number (3936).

2²⁶²⁴³ is an apocalyptic number.

26243 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

26243 is a deficient number, since it is larger than the sum of its proper divisors (5245).

26243 is a wasteful number, since it uses less digits than its factorization.

26243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193.

The product of its digits is 288, while the sum is 17.

The square root of 26243 is about 161.9969135508. The cubic root of 26243 is about 29.7169677859.

The spelling of 26243 in words is "twenty-six thousand, two hundred forty-three".