18030528 has 84 divisors (see below), whose sum is σ = 53967888. Its totient is φ = 5744640.

The previous prime is 18030497. The next prime is 18030569. The reversal of 18030528 is 82503081.

It is a happy number.

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 11 ways as a sum of consecutive naturals, for example, 12568 + ... + 13928.

Almost surely, 2^18030528 is an apocalyptic number.

18030528 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18030528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26983944).

18030528 is an abundant number, since it is smaller than the sum of its proper divisors (35937360).

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

18030528 is a wasteful number, since it uses less digits than its factorization.

18030528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402 (or 1389 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 18030528 is about 4246.2369222642. The cubic root of 18030528 is about 262.2222149872. Note that the first 4 decimals are identical.

The spelling of 18030528 in words is "eighteen million, thirty thousand, five hundred twenty-eight".