18224316 has 36 divisors (see below), whose sum is σ = 50256024. Its totient is φ = 5522400.

The previous prime is 18224293. The next prime is 18224321. The reversal of 18224316 is 61342281.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 18224316.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 22615 + ... + 23406.

Almost surely, 2^18224316 is an apocalyptic number.

It is an amenable number.

18224316 is an abundant number, since it is smaller than the sum of its proper divisors (32031708).

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

18224316 is a wasteful number, since it uses less digits than its factorization.

18224316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46042 (or 46037 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 18224316 is about 4268.9947294416. The cubic root of 18224316 is about 263.1583041706.

Adding to 18224316 its reverse (61342281), we get a palindrome (79566597).

The spelling of 18224316 in words is "eighteen million, two hundred twenty-four thousand, three hundred sixteen".