26402791 has 2 divisors, whose sum is σ = 26402792. Its totient is φ = 26402790.

The previous prime is 26402771. The next prime is 26402797. The reversal of 26402791 is 19720462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26402791 - 2⁵ = 26402759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26402797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13201395 + 13201396.

It is an arithmetic number, because the mean of its divisors is an integer number (13201396).

Almost surely, 2^26402791 is an apocalyptic number.

26402791 is a deficient number, since it is larger than the sum of its proper divisors (1).

26402791 is an equidigital number, since it uses as much as digits as its factorization.

26402791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 26402791 is about 5138.3646231072. The cubic root of 26402791 is about 297.7716032925.

The spelling of 26402791 in words is "twenty-six million, four hundred two thousand, seven hundred ninety-one".