27681732 has 36 divisors (see below), whose sum is σ = 75357100. Its totient is φ = 8517312.

The previous prime is 27681721. The next prime is 27681733. The reversal of 27681732 is 23718672.

It can be written as a sum of positive squares in 2 ways, for example, as 18096516 + 9585216 = 4254^2 + 3096^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (27681733) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29107 + ... + 30042.

Almost surely, 2^27681732 is an apocalyptic number.

It is an amenable number.

27681732 is an abundant number, since it is smaller than the sum of its proper divisors (47675368).

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

27681732 is a wasteful number, since it uses less digits than its factorization.

27681732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59172 (or 59167 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 27681732 is about 5261.3431745135. The cubic root of 27681732 is about 302.5039755414.

The spelling of 27681732 in words is "twenty-seven million, six hundred eighty-one thousand, seven hundred thirty-two".