27228947 has 2 divisors, whose sum is σ = 27228948. Its totient is φ = 27228946.

The previous prime is 27228931. The next prime is 27228953. The reversal of 27228947 is 74982272.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27228947 - 2⁴ = 27228931 is a prime.

It is not a weakly prime, because it can be changed into another prime (27228347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13614473 + 13614474.

It is an arithmetic number, because the mean of its divisors is an integer number (13614474).

Almost surely, 2^27228947 is an apocalyptic number.

27228947 is a deficient number, since it is larger than the sum of its proper divisors (1).

27228947 is an equidigital number, since it uses as much as digits as its factorization.

27228947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 41.

The square root of 27228947 is about 5218.1363531437. The cubic root of 27228947 is about 300.8455663379.

The spelling of 27228947 in words is "twenty-seven million, two hundred twenty-eight thousand, nine hundred forty-seven".