18030864 has 20 divisors (see below), whose sum is σ = 46579856. Its totient is φ = 6010272.

The previous prime is 18030853. The next prime is 18030869. The reversal of 18030864 is 46803081.

It is a happy number.

It is a super-2 number, since 2×18030864² = 650224113172992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18030869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187774 + ... + 187869.

Almost surely, 2^18030864 is an apocalyptic number.

It is an amenable number.

18030864 is an abundant number, since it is smaller than the sum of its proper divisors (28548992).

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

18030864 is a wasteful number, since it uses less digits than its factorization.

18030864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375654 (or 375648 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 18030864 is about 4246.2764865232. The cubic root of 18030864 is about 262.2238438194.

The spelling of 18030864 in words is "eighteen million, thirty thousand, eight hundred sixty-four".