27987648 has 56 divisors (see below), whose sum is σ = 79753968. Its totient is φ = 8610816.

The previous prime is 27987647. The next prime is 27987649. The reversal of 27987648 is 84678972.

It is an interprime number because it is at equal distance from previous prime (27987647) and next prime (27987649).

It is a self number, because there is not a number n which added to its sum of digits gives 27987648.

It is not an unprimeable number, because it can be changed into a prime (27987643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3111 + ... + 8102.

It is an arithmetic number, because the mean of its divisors is an integer number (1424178).

Almost surely, 2^27987648 is an apocalyptic number.

It is an amenable number.

27987648 is an abundant number, since it is smaller than the sum of its proper divisors (51766320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27987648 is a wasteful number, since it uses less digits than its factorization.

27987648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11241 (or 11231 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 51.

The square root of 27987648 is about 5290.3353390877. The cubic root of 27987648 is about 303.6142383021.

The spelling of 27987648 in words is "twenty-seven million, nine hundred eighty-seven thousand, six hundred forty-eight".