18505528 has 16 divisors (see below), whose sum is σ = 34744680. Its totient is φ = 9240288.

The previous prime is 18505519. The next prime is 18505541. The reversal of 18505528 is 82550581.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18505493 and 18505502.

It is a congruent number.

It is an unprimeable number.

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, 8751 + ... + 10657.

Almost surely, 2^18505528 is an apocalyptic number.

It is an amenable number.

18505528 is a deficient number, since it is larger than the sum of its proper divisors (16239152).

18505528 is a wasteful number, since it uses less digits than its factorization.

18505528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3126 (or 3122 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 34.

The square root of 18505528 is about 4301.8052024702. The cubic root of 18505528 is about 264.5049640353.

The spelling of 18505528 in words is "eighteen million, five hundred five thousand, five hundred twenty-eight".