27722987 has 2 divisors, whose sum is σ = 27722988. Its totient is φ = 27722986.

The previous prime is 27722941. The next prime is 27722993. The reversal of 27722987 is 78922772.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27722987 - 2¹⁶ = 27657451 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27722887) 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, 13861493 + 13861494.

It is an arithmetic number, because the mean of its divisors is an integer number (13861494).

Almost surely, 2^27722987 is an apocalyptic number.

27722987 is a deficient number, since it is larger than the sum of its proper divisors (1).

27722987 is an equidigital number, since it uses as much as digits as its factorization.

27722987 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 27722987 is about 5265.2622916622. The cubic root of 27722987 is about 302.6541781727.

The spelling of 27722987 in words is "twenty-seven million, seven hundred twenty-two thousand, nine hundred eighty-seven".