27930018 has 16 divisors (see below), whose sum is σ = 56096640. Its totient is φ = 9270576.

The previous prime is 27930013. The next prime is 27930037. The reversal of 27930018 is 81003972.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (27930013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8305 + ... + 11172.

It is an arithmetic number, because the mean of its divisors is an integer number (3506040).

Almost surely, 2^27930018 is an apocalyptic number.

27930018 is an abundant number, since it is smaller than the sum of its proper divisors (28166622).

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

27930018 is a wasteful number, since it uses less digits than its factorization.

27930018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19721.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 27930018 is about 5284.8858076594. The cubic root of 27930018 is about 303.4057021174.

The spelling of 27930018 in words is "twenty-seven million, nine hundred thirty thousand, eighteen".