27648618 has 16 divisors (see below), whose sum is σ = 55364160. Its totient is φ = 9205056.

The previous prime is 27648611. The next prime is 27648619. The reversal of 27648618 is 81684672.

It is a self number, because there is not a number n which added to its sum of digits gives 27648618.

It is not an unprimeable number, because it can be changed into a prime (27648611) 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 7 ways as a sum of consecutive naturals, for example, 3771 + ... + 8337.

It is an arithmetic number, because the mean of its divisors is an integer number (3460260).

Almost surely, 2^27648618 is an apocalyptic number.

27648618 is an abundant number, since it is smaller than the sum of its proper divisors (27715542).

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

27648618 is a wasteful number, since it uses less digits than its factorization.

27648618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5581.

The product of its digits is 129024, while the sum is 42.

The square root of 27648618 is about 5258.1953177873. The cubic root of 27648618 is about 302.3833049418.

The spelling of 27648618 in words is "twenty-seven million, six hundred forty-eight thousand, six hundred eighteen".