27681672 has 32 divisors (see below), whose sum is σ = 69717600. Its totient is φ = 9158784.

The previous prime is 27681671. The next prime is 27681677. The reversal of 27681672 is 27618672.

It is a self number, because there is not a number n which added to its sum of digits gives 27681672.

It is not an unprimeable number, because it can be changed into a prime (27681671) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 922 + ... + 7497.

It is an arithmetic number, because the mean of its divisors is an integer number (2178675).

Almost surely, 2^27681672 is an apocalyptic number.

It is an amenable number.

27681672 is an abundant number, since it is smaller than the sum of its proper divisors (42035928).

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

27681672 is a wasteful number, since it uses less digits than its factorization.

27681672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8565 (or 8561 counting only the distinct ones).

The product of its digits is 56448, while the sum is 39.

The square root of 27681672 is about 5261.3374725444. The cubic root of 27681672 is about 302.5037569827.

The spelling of 27681672 in words is "twenty-seven million, six hundred eighty-one thousand, six hundred seventy-two".