18242508 has 96 divisors (see below), whose sum is σ = 48384000. Its totient is φ = 5322240.

The previous prime is 18242507. The next prime is 18242551. The reversal of 18242508 is 80524281.

18242508 is a modest number, since divided by 2508 gives 1824 as remainder.

It is not an unprimeable number, because it can be changed into a prime (18242503) by changing a digit.

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, 204928 + ... + 205016.

It is an arithmetic number, because the mean of its divisors is an integer number (504000).

Almost surely, 2^18242508 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18242508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24192000).

18242508 is an abundant number, since it is smaller than the sum of its proper divisors (30141492).

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

18242508 is a wasteful number, since it uses less digits than its factorization.

18242508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 18242508 is about 4271.1249103720. The cubic root of 18242508 is about 263.2458389381.

Adding to 18242508 its reverse (80524281), we get a palindrome (98766789).

The spelling of 18242508 in words is "eighteen million, two hundred forty-two thousand, five hundred eight".