18806016 has 72 divisors (see below), whose sum is σ = 51214464. Its totient is φ = 6123520.

The previous prime is 18805951. The next prime is 18806077. The reversal of 18806016 is 61060881.

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 7 ways as a sum of consecutive naturals, for example, 35836 + ... + 36356.

It is an arithmetic number, because the mean of its divisors is an integer number (711312).

Almost surely, 2^18806016 is an apocalyptic number.

18806016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18806016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25607232).

18806016 is an abundant number, since it is smaller than the sum of its proper divisors (32408448).

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

18806016 is an equidigital number, since it uses as much as digits as its factorization.

18806016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587 (or 573 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 18806016 is about 4336.5903657136. The cubic root of 18806016 is about 265.9289387505.

Adding to 18806016 its reverse (61060881), we get a palindrome (79866897).

The spelling of 18806016 in words is "eighteen million, eight hundred six thousand, sixteen".