27988873 has 12 divisors (see below), whose sum is σ = 30930480. Its totient is φ = 25307480.

The previous prime is 27988871. The next prime is 27988879. The reversal of 27988873 is 37888972.

It is not a de Polignac number, because 27988873 - 2¹ = 27988871 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27988873.

It is not an unprimeable number, because it can be changed into a prime (27988871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26958 + ... + 27976.

It is an arithmetic number, because the mean of its divisors is an integer number (2577540).

Almost surely, 2^27988873 is an apocalyptic number.

It is an amenable number.

27988873 is a deficient number, since it is larger than the sum of its proper divisors (2941607).

27988873 is a wasteful number, since it uses less digits than its factorization.

27988873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268 (or 1257 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 52.

The square root of 27988873 is about 5290.4511149806. The cubic root of 27988873 is about 303.6186678992.

Subtracting 27988873 from its reverse (37888972), we obtain a palindrome (9900099).

The spelling of 27988873 in words is "twenty-seven million, nine hundred eighty-eight thousand, eight hundred seventy-three".