18822342 has 64 divisors (see below), whose sum is σ = 47443968. Its totient is φ = 4836000.

The previous prime is 18822337. The next prime is 18822361. The reversal of 18822342 is 24322881.

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 31 ways as a sum of consecutive naturals, for example, 60367 + ... + 60677.

It is an arithmetic number, because the mean of its divisors is an integer number (741312).

Almost surely, 2^18822342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18822342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23721984).

18822342 is an abundant number, since it is smaller than the sum of its proper divisors (28621626).

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

18822342 is a wasteful number, since it uses less digits than its factorization.

18822342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465.

The product of its digits is 6144, while the sum is 30.

The square root of 18822342 is about 4338.4723117706. The cubic root of 18822342 is about 266.0058698085.

It can be divided in two parts, 1882 and 2342, that added together give a palindrome (4224).

The spelling of 18822342 in words is "eighteen million, eight hundred twenty-two thousand, three hundred forty-two".