18305528 has 16 divisors (see below), whose sum is σ = 35251080. Its totient is φ = 8905248.

The previous prime is 18305527. The next prime is 18305533. The reversal of 18305528 is 82550381.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18305494 and 18305503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18305527) 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 3 ways as a sum of consecutive naturals, for example, 30626 + ... + 31217.

Almost surely, 2^18305528 is an apocalyptic number.

It is an amenable number.

18305528 is a deficient number, since it is larger than the sum of its proper divisors (16945552).

18305528 is a wasteful number, since it uses less digits than its factorization.

18305528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61886 (or 61882 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 18305528 is about 4278.4959974271. The cubic root of 18305528 is about 263.5486241667.

The spelling of 18305528 in words is "eighteen million, three hundred five thousand, five hundred twenty-eight".