27668718 has 48 divisors (see below), whose sum is σ = 74745216. Its totient is φ = 7186320.

The previous prime is 27668717. The next prime is 27668743. The reversal of 27668718 is 81786672.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27668717) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 8596 + ... + 11367.

It is an arithmetic number, because the mean of its divisors is an integer number (1557192).

Almost surely, 2^27668718 is an apocalyptic number.

27668718 is an abundant number, since it is smaller than the sum of its proper divisors (47076498).

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

27668718 is a wasteful number, since it uses less digits than its factorization.

27668718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19989 (or 19986 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 27668718 is about 5260.1062726907. The cubic root of 27668718 is about 302.4565627587.

The spelling of 27668718 in words is "twenty-seven million, six hundred sixty-eight thousand, seven hundred eighteen".