18804080 has 20 divisors (see below), whose sum is σ = 43719672. Its totient is φ = 7521600.

The previous prime is 18804077. The next prime is 18804113. The reversal of 18804080 is 8040881.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117446 + ... + 117605.

Almost surely, 2^18804080 is an apocalyptic number.

18804080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18804080 is an abundant number, since it is smaller than the sum of its proper divisors (24915592).

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

18804080 is a wasteful number, since it uses less digits than its factorization.

18804080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235064 (or 235058 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 29.

The square root of 18804080 is about 4336.3671431280. The cubic root of 18804080 is about 265.9198130166.

The spelling of 18804080 in words is "eighteen million, eight hundred four thousand, eighty".