27228319 has 2 divisors, whose sum is σ = 27228320. Its totient is φ = 27228318.

The previous prime is 27228317. The next prime is 27228347. The reversal of 27228319 is 91382272.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27228319 - 2¹ = 27228317 is a prime.

It is a super-2 number, since 2×27228319² = 1482762711131522, which contains 22 as substring.

Together with 27228317, it forms a pair of twin primes.

It is equal to p_1696417 and since 27228319 and 1696417 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27228317) 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, 13614159 + 13614160.

It is an arithmetic number, because the mean of its divisors is an integer number (13614160).

Almost surely, 2^27228319 is an apocalyptic number.

27228319 is a deficient number, since it is larger than the sum of its proper divisors (1).

27228319 is an equidigital number, since it uses as much as digits as its factorization.

27228319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 34.

The square root of 27228319 is about 5218.0761780564. The cubic root of 27228319 is about 300.8432534505.

The spelling of 27228319 in words is "twenty-seven million, two hundred twenty-eight thousand, three hundred nineteen".