27986872 has 8 divisors (see below), whose sum is σ = 52475400. Its totient is φ = 13993432.

The previous prime is 27986869. The next prime is 27986873. The reversal of 27986872 is 27868972.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27986873) 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, 1749172 + ... + 1749187.

It is an arithmetic number, because the mean of its divisors is an integer number (6559425).

Almost surely, 2^27986872 is an apocalyptic number.

It is an amenable number.

27986872 is a deficient number, since it is larger than the sum of its proper divisors (24488528).

27986872 is a wasteful number, since it uses less digits than its factorization.

27986872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3498365 (or 3498361 counting only the distinct ones).

The product of its digits is 677376, while the sum is 49.

The square root of 27986872 is about 5290.2619972928. The cubic root of 27986872 is about 303.6114322211.

The spelling of 27986872 in words is "twenty-seven million, nine hundred eighty-six thousand, eight hundred seventy-two".