18104928 has 48 divisors (see below), whose sum is σ = 48013056. Its totient is φ = 5973120.

The previous prime is 18104927. The next prime is 18104939. The reversal of 18104928 is 82940181.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18104923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8973 + ... + 10803.

It is an arithmetic number, because the mean of its divisors is an integer number (1000272).

Almost surely, 2^18104928 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 18104928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24006528).

18104928 is an abundant number, since it is smaller than the sum of its proper divisors (29908128).

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

18104928 is a wasteful number, since it uses less digits than its factorization.

18104928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1947 (or 1939 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 18104928 is about 4254.9886016299. The cubic root of 18104928 is about 262.5823922770.

The spelling of 18104928 in words is "eighteen million, one hundred four thousand, nine hundred twenty-eight".