26782891 has 2 divisors, whose sum is σ = 26782892. Its totient is φ = 26782890.

The previous prime is 26782883. The next prime is 26782901. The reversal of 26782891 is 19828762.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26782891 - 2³ = 26782883 is a prime.

It is not a weakly prime, because it can be changed into another prime (26782801) 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 as a sum of consecutive naturals, namely, 13391445 + 13391446.

It is an arithmetic number, because the mean of its divisors is an integer number (13391446).

Almost surely, 2^26782891 is an apocalyptic number.

26782891 is a deficient number, since it is larger than the sum of its proper divisors (1).

26782891 is an equidigital number, since it uses as much as digits as its factorization.

26782891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 43.

The square root of 26782891 is about 5175.2189325670. The cubic root of 26782891 is about 299.1937276167.

The spelling of 26782891 in words is "twenty-six million, seven hundred eighty-two thousand, eight hundred ninety-one".