26805023 has 4 divisors (see below), whose sum is σ = 30634320. Its totient is φ = 22975728.

The previous prime is 26805017. The next prime is 26805041. The reversal of 26805023 is 32050862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32050862 = 2 ⋅16025431.

It is a cyclic number.

It is not a de Polignac number, because 26805023 - 2²⁰ = 25756447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26804983 and 26805001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26805083) 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, 1914638 + ... + 1914651.

It is an arithmetic number, because the mean of its divisors is an integer number (7658580).

Almost surely, 2^26805023 is an apocalyptic number.

26805023 is a deficient number, since it is larger than the sum of its proper divisors (3829297).

26805023 is an equidigital number, since it uses as much as digits as its factorization.

26805023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3829296.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 26805023 is about 5177.3567580378. The cubic root of 26805023 is about 299.2761176825.

Adding to 26805023 its reverse (32050862), we get a palindrome (58855885).

The spelling of 26805023 in words is "twenty-six million, eight hundred five thousand, twenty-three".