18080608 has 72 divisors (see below), whose sum is σ = 44643312. Its totient is φ = 7144704.

The previous prime is 18080603. The next prime is 18080627. The reversal of 18080608 is 80608081.

It is a self number, because there is not a number n which added to its sum of digits gives 18080608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18080603) by changing a digit.

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, 19941 + ... + 20827.

It is an arithmetic number, because the mean of its divisors is an integer number (620046).

Almost surely, 2^18080608 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 18080608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22321656).

18080608 is an abundant number, since it is smaller than the sum of its proper divisors (26562704).

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

18080608 is a wasteful number, since it uses less digits than its factorization.

18080608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924 (or 909 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 18080608 is about 4252.1298192788. The cubic root of 18080608 is about 262.4647656412.

Adding to 18080608 its reverse (80608081), we get a palindrome (98688689).

The spelling of 18080608 in words is "eighteen million, eighty thousand, six hundred eight".