27639968 has 12 divisors (see below), whose sum is σ = 54416250. Its totient is φ = 13819968.

The previous prime is 27639959. The next prime is 27639971. The reversal of 27639968 is 86993672.

It can be written as a sum of positive squares in only one way, i.e., 18079504 + 9560464 = 4252^2 + 3092^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431843 + ... + 431906.

Almost surely, 2^27639968 is an apocalyptic number.

It is an amenable number.

27639968 is a deficient number, since it is larger than the sum of its proper divisors (26776282).

27639968 is an equidigital number, since it uses as much as digits as its factorization.

27639968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863759 (or 863751 counting only the distinct ones).

The product of its digits is 979776, while the sum is 50.

The square root of 27639968 is about 5257.3727278937. The cubic root of 27639968 is about 302.3517676403.

The spelling of 27639968 in words is "twenty-seven million, six hundred thirty-nine thousand, nine hundred sixty-eight".