18445308 has 24 divisors (see below), whose sum is σ = 49187712. Its totient is φ = 5270064.

The previous prime is 18445253. The next prime is 18445313. The reversal of 18445308 is 80354481.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109710 + ... + 109877.

It is an arithmetic number, because the mean of its divisors is an integer number (2049488).

Almost surely, 2^18445308 is an apocalyptic number.

It is an amenable number.

18445308 is an abundant number, since it is smaller than the sum of its proper divisors (30742404).

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

18445308 is a wasteful number, since it uses less digits than its factorization.

18445308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219601 (or 219599 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 18445308 is about 4294.8001117631. The cubic root of 18445308 is about 264.2177381821.

Adding to 18445308 its reverse (80354481), we get a palindrome (98799789).

The spelling of 18445308 in words is "eighteen million, four hundred forty-five thousand, three hundred eight".