27420791 has 2 divisors, whose sum is σ = 27420792. Its totient is φ = 27420790.

The previous prime is 27420773. The next prime is 27420851. The reversal of 27420791 is 19702472.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27420791 - 2⁶ = 27420727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27423791) 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, 13710395 + 13710396.

It is an arithmetic number, because the mean of its divisors is an integer number (13710396).

Almost surely, 2^27420791 is an apocalyptic number.

27420791 is a deficient number, since it is larger than the sum of its proper divisors (1).

27420791 is an equidigital number, since it uses as much as digits as its factorization.

27420791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 27420791 is about 5236.4865129207. The cubic root of 27420791 is about 301.5504583109.

The spelling of 27420791 in words is "twenty-seven million, four hundred twenty thousand, seven hundred ninety-one".