27916481 has 2 divisors, whose sum is σ = 27916482. Its totient is φ = 27916480.

The previous prime is 27916477. The next prime is 27916513. The reversal of 27916481 is 18461972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26884225 + 1032256 = 5185^2 + 1016^2 .

It is a cyclic number.

It is not a de Polignac number, because 27916481 - 2² = 27916477 is a prime.

It is a super-2 number, since 2×27916481² = 1558659822846722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27916451) 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, 13958240 + 13958241.

It is an arithmetic number, because the mean of its divisors is an integer number (13958241).

Almost surely, 2^27916481 is an apocalyptic number.

It is an amenable number.

27916481 is a deficient number, since it is larger than the sum of its proper divisors (1).

27916481 is an equidigital number, since it uses as much as digits as its factorization.

27916481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 38.

The square root of 27916481 is about 5283.6049246703. The cubic root of 27916481 is about 303.3566764094.

The spelling of 27916481 in words is "twenty-seven million, nine hundred sixteen thousand, four hundred eighty-one".