27948671 has 2 divisors, whose sum is σ = 27948672. Its totient is φ = 27948670.

The previous prime is 27948551. The next prime is 27948743. The reversal of 27948671 is 17684972.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27948671 is a prime.

It is a super-2 number, since 2×27948671² = 1562256421332482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27948871) 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, 13974335 + 13974336.

It is an arithmetic number, because the mean of its divisors is an integer number (13974336).

Almost surely, 2^27948671 is an apocalyptic number.

27948671 is a deficient number, since it is larger than the sum of its proper divisors (1).

27948671 is an equidigital number, since it uses as much as digits as its factorization.

27948671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 44.

The square root of 27948671 is about 5286.6502626900. The cubic root of 27948671 is about 303.4732300265.

The spelling of 27948671 in words is "twenty-seven million, nine hundred forty-eight thousand, six hundred seventy-one".