18448782 has 64 divisors (see below), whose sum is σ = 42467328. Its totient is φ = 5292000.

The previous prime is 18448777. The next prime is 18448789. The reversal of 18448782 is 28784481.

18448782 is nontrivially palindromic in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18448789) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145203 + ... + 145329.

It is an arithmetic number, because the mean of its divisors is an integer number (663552).

Almost surely, 2^18448782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18448782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21233664).

18448782 is an abundant number, since it is smaller than the sum of its proper divisors (24018546).

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

18448782 is a wasteful number, since it uses less digits than its factorization.

18448782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245.

The product of its digits is 114688, while the sum is 42.

The square root of 18448782 is about 4295.2045352928. The cubic root of 18448782 is about 264.2343247815.

The spelling of 18448782 in words is "eighteen million, four hundred forty-eight thousand, seven hundred eighty-two".