27986830 has 16 divisors (see below), whose sum is σ = 50602320. Its totient is φ = 11144512.

The previous prime is 27986807. The next prime is 27986857. The reversal of 27986830 is 3868972.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 3895 + ... + 8434.

It is an arithmetic number, because the mean of its divisors is an integer number (3162645).

Almost surely, 2^27986830 is an apocalyptic number.

27986830 is a deficient number, since it is larger than the sum of its proper divisors (22615490).

27986830 is a wasteful number, since it uses less digits than its factorization.

27986830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12563.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 27986830 is about 5290.2580277336. The cubic root of 27986830 is about 303.6112803441.

The spelling of 27986830 in words is "twenty-seven million, nine hundred eighty-six thousand, eight hundred thirty".