27986028 has 48 divisors (see below), whose sum is σ = 74936064. Its totient is φ = 7963200.

The previous prime is 27986011. The next prime is 27986033. The reversal of 27986028 is 82068972.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 26103 + ... + 27153.

It is an arithmetic number, because the mean of its divisors is an integer number (1561168).

Almost surely, 2^27986028 is an apocalyptic number.

27986028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

27986028 is an abundant number, since it is smaller than the sum of its proper divisors (46950036).

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

27986028 is a wasteful number, since it uses less digits than its factorization.

27986028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382 (or 1380 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 27986028 is about 5290.1822274852. The cubic root of 27986028 is about 303.6083801874.

The spelling of 27986028 in words is "twenty-seven million, nine hundred eighty-six thousand, twenty-eight".