26788091 has 4 divisors (see below), whose sum is σ = 29223384. Its totient is φ = 24352800.

The previous prime is 26788067. The next prime is 26788093. The reversal of 26788091 is 19088762.

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

It is a cyclic number.

It is not a de Polignac number, because 26788091 - 2²² = 22593787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26788093) 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, 1217630 + ... + 1217651.

It is an arithmetic number, because the mean of its divisors is an integer number (7305846).

Almost surely, 2^26788091 is an apocalyptic number.

26788091 is a deficient number, since it is larger than the sum of its proper divisors (2435293).

26788091 is a wasteful number, since it uses less digits than its factorization.

26788091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2435292.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 26788091 is about 5175.7213023887. The cubic root of 26788091 is about 299.2130895631.

The spelling of 26788091 in words is "twenty-six million, seven hundred eighty-eight thousand, ninety-one".