18030288 has 20 divisors (see below), whose sum is σ = 46578368. Its totient is φ = 6010080.

The previous prime is 18030241. The next prime is 18030293. The reversal of 18030288 is 88203081.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187768 + ... + 187863.

Almost surely, 2^18030288 is an apocalyptic number.

It is an amenable number.

18030288 is an abundant number, since it is smaller than the sum of its proper divisors (28548080).

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

18030288 is a wasteful number, since it uses less digits than its factorization.

18030288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375642 (or 375636 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 18030288 is about 4246.2086618535. The cubic root of 18030288 is about 262.2210515232.

The spelling of 18030288 in words is "eighteen million, thirty thousand, two hundred eighty-eight".