27987356 has 6 divisors (see below), whose sum is σ = 48977880. Its totient is φ = 13993676.

The previous prime is 27987353. The next prime is 27987359. The reversal of 27987356 is 65378972.

It is an interprime number because it is at equal distance from previous prime (27987353) and next prime (27987359).

It is a self number, because there is not a number n which added to its sum of digits gives 27987356.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27987353) 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, 3498416 + ... + 3498423.

It is an arithmetic number, because the mean of its divisors is an integer number (8162980).

Almost surely, 2^27987356 is an apocalyptic number.

It is an amenable number.

27987356 is a deficient number, since it is larger than the sum of its proper divisors (20990524).

27987356 is a wasteful number, since it uses less digits than its factorization.

27987356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6996843 (or 6996841 counting only the distinct ones).

The product of its digits is 635040, while the sum is 47.

The square root of 27987356 is about 5290.3077415213. The cubic root of 27987356 is about 303.6131824117.

The spelling of 27987356 in words is "twenty-seven million, nine hundred eighty-seven thousand, three hundred fifty-six".