27228739 has 2 divisors, whose sum is σ = 27228740. Its totient is φ = 27228738.

The previous prime is 27228727. The next prime is 27228779. The reversal of 27228739 is 93782272.

It is an a-pointer prime, because the next prime (27228779) can be obtained adding 27228739 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27228739 - 2¹¹ = 27226691 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27228779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13614369 + 13614370.

It is an arithmetic number, because the mean of its divisors is an integer number (13614370).

Almost surely, 2^27228739 is an apocalyptic number.

27228739 is a deficient number, since it is larger than the sum of its proper divisors (1).

27228739 is an equidigital number, since it uses as much as digits as its factorization.

27228739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 40.

The square root of 27228739 is about 5218.1164226184. The cubic root of 27228739 is about 300.8448002900.

The spelling of 27228739 in words is "twenty-seven million, two hundred twenty-eight thousand, seven hundred thirty-nine".