27989841 has 24 divisors (see below), whose sum is σ = 41559840. Its totient is φ = 16741120.

The previous prime is 27989821. The next prime is 27989881. The reversal of 27989841 is 14898972.

It is not a de Polignac number, because 27989841 - 2¹¹ = 27987793 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27989821) 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 in 23 ways as a sum of consecutive naturals, for example, 29665 + ... + 30593.

It is an arithmetic number, because the mean of its divisors is an integer number (1731660).

Almost surely, 2^27989841 is an apocalyptic number.

It is an amenable number.

27989841 is a deficient number, since it is larger than the sum of its proper divisors (13569999).

27989841 is a wasteful number, since it uses less digits than its factorization.

27989841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037 (or 1026 counting only the distinct ones).

The product of its digits is 290304, while the sum is 48.

The square root of 27989841 is about 5290.5425997718. The cubic root of 27989841 is about 303.6221680935.

The spelling of 27989841 in words is "twenty-seven million, nine hundred eighty-nine thousand, eight hundred forty-one".