18804016 has 40 divisors (see below), whose sum is σ = 45425664. Its totient is φ = 7325760.

The previous prime is 18803971. The next prime is 18804017. The reversal of 18804016 is 61040881.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (18804017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6400 + ... + 8863.

Almost surely, 2^18804016 is an apocalyptic number.

18804016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18804016 is an abundant number, since it is smaller than the sum of its proper divisors (26621648).

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

18804016 is a wasteful number, since it uses less digits than its factorization.

18804016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15289 (or 15283 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 18804016 is about 4336.3597636728. The cubic root of 18804016 is about 265.9195113288.

Adding to 18804016 its reverse (61040881), we get a palindrome (79844897).

The spelling of 18804016 in words is "eighteen million, eight hundred four thousand, sixteen".