18448734 has 16 divisors (see below), whose sum is σ = 38839680. Its totient is φ = 5825880.

The previous prime is 18448709. The next prime is 18448739. The reversal of 18448734 is 43784481.

It is a junction number, because it is equal to n+sod(n) for n = 18448692 and 18448701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18448739) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 80802 + ... + 81029.

It is an arithmetic number, because the mean of its divisors is an integer number (2427480).

Almost surely, 2^18448734 is an apocalyptic number.

18448734 is an abundant number, since it is smaller than the sum of its proper divisors (20390946).

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

18448734 is a wasteful number, since it uses less digits than its factorization.

18448734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161855.

The product of its digits is 86016, while the sum is 39.

The square root of 18448734 is about 4295.1989476624. The cubic root of 18448734 is about 264.2340956199.

The spelling of 18448734 in words is "eighteen million, four hundred forty-eight thousand, seven hundred thirty-four".