27986534 has 4 divisors (see below), whose sum is σ = 41979804. Its totient is φ = 13993266.

The previous prime is 27986527. The next prime is 27986549. The reversal of 27986534 is 43568972.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6996632 + ... + 6996635.

It is an arithmetic number, because the mean of its divisors is an integer number (10494951).

Almost surely, 2^27986534 is an apocalyptic number.

27986534 is a deficient number, since it is larger than the sum of its proper divisors (13993270).

27986534 is a wasteful number, since it uses less digits than its factorization.

27986534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13993269.

The product of its digits is 362880, while the sum is 44.

The square root of 27986534 is about 5290.2300517085. The cubic root of 27986534 is about 303.6102099685.

The spelling of 27986534 in words is "twenty-seven million, nine hundred eighty-six thousand, five hundred thirty-four".