18505734 has 32 divisors (see below), whose sum is σ = 41959680. Its totient is φ = 5393952.

The previous prime is 18505727. The next prime is 18505759. The reversal of 18505734 is 43750581.

It is a junction number, because it is equal to n+sod(n) for n = 18505695 and 18505704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4762 + ... + 7725.

It is an arithmetic number, because the mean of its divisors is an integer number (1311240).

Almost surely, 2^18505734 is an apocalyptic number.

18505734 is an abundant number, since it is smaller than the sum of its proper divisors (23453946).

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

18505734 is a wasteful number, since it uses less digits than its factorization.

18505734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12524.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 18505734 is about 4301.8291458402. The cubic root of 18505734 is about 264.5059455045.

The spelling of 18505734 in words is "eighteen million, five hundred five thousand, seven hundred thirty-four".