27228779 has 2 divisors, whose sum is σ = 27228780. Its totient is φ = 27228778.

The previous prime is 27228739. The next prime is 27228793. The reversal of 27228779 is 97782272.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27228779 - 2²⁴ = 10451563 is a prime.

It is not a weakly prime, because it can be changed into another prime (27228739) 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, 13614389 + 13614390.

It is an arithmetic number, because the mean of its divisors is an integer number (13614390).

Almost surely, 2^27228779 is an apocalyptic number.

27228779 is a deficient number, since it is larger than the sum of its proper divisors (1).

27228779 is an equidigital number, since it uses as much as digits as its factorization.

27228779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 197568, while the sum is 44.

The square root of 27228779 is about 5218.1202554177. The cubic root of 27228779 is about 300.8449476072.

The spelling of 27228779 in words is "twenty-seven million, two hundred twenty-eight thousand, seven hundred seventy-nine".