27648018 has 24 divisors (see below), whose sum is σ = 63428508. Its totient is φ = 8673792.

The previous prime is 27647989. The next prime is 27648031. The reversal of 27648018 is 81084672.

27648018 is a `hidden beast` number, since 2 + 7 + 648 + 0 + 1 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 26286129 + 1361889 = 5127^2 + 1167^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44871 + ... + 45482.

Almost surely, 2^27648018 is an apocalyptic number.

27648018 is an abundant number, since it is smaller than the sum of its proper divisors (35780490).

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

27648018 is a wasteful number, since it uses less digits than its factorization.

27648018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90378 (or 90375 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 27648018 is about 5258.1382636823. The cubic root of 27648018 is about 302.3811175956.

The spelling of 27648018 in words is "twenty-seven million, six hundred forty-eight thousand, eighteen".