18112928 has 48 divisors (see below), whose sum is σ = 38787840. Its totient is φ = 8303040.

The previous prime is 18112921. The next prime is 18112931. The reversal of 18112928 is 82921181.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 18112894 and 18112903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18112921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 584273 + ... + 584303.

It is an arithmetic number, because the mean of its divisors is an integer number (808080).

Almost surely, 2^18112928 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 18112928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19393920).

18112928 is an abundant number, since it is smaller than the sum of its proper divisors (20674912).

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

18112928 is an frugal number, since it uses more digits than its factorization.

18112928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 52 counting only the distinct ones).

The product of its digits is 2304, while the sum is 32.

The square root of 18112928 is about 4255.9285708292. The cubic root of 18112928 is about 262.6210622238.

The spelling of 18112928 in words is "eighteen million, one hundred twelve thousand, nine hundred twenty-eight".