26450891 has 4 divisors (see below), whose sum is σ = 27066072. Its totient is φ = 25835712.

The previous prime is 26450873. The next prime is 26450899. The reversal of 26450891 is 19805462.

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 26450891 - 2¹⁰ = 26449867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26450899) 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, 307526 + ... + 307611.

It is an arithmetic number, because the mean of its divisors is an integer number (6766518).

Almost surely, 2^26450891 is an apocalyptic number.

26450891 is a deficient number, since it is larger than the sum of its proper divisors (615181).

26450891 is an equidigital number, since it uses as much as digits as its factorization.

26450891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615180.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 26450891 is about 5143.0429708491. The cubic root of 26450891 is about 297.9523180921.

The spelling of 26450891 in words is "twenty-six million, four hundred fifty thousand, eight hundred ninety-one".