18316928 has 32 divisors (see below), whose sum is σ = 41705760. Its totient is φ = 7849728.

The previous prime is 18316927. The next prime is 18316957. The reversal of 18316928 is 82961381.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 18316891 and 18316900.

It is not an unprimeable number, because it can be changed into a prime (18316927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9326 + ... + 11117.

It is an arithmetic number, because the mean of its divisors is an integer number (1303305).

Almost surely, 2^18316928 is an apocalyptic number.

It is an amenable number.

18316928 is an abundant number, since it is smaller than the sum of its proper divisors (23388832).

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

18316928 is an equidigital number, since it uses as much as digits as its factorization.

18316928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20464 (or 20452 counting only the distinct ones).

The product of its digits is 20736, while the sum is 38.

The square root of 18316928 is about 4279.8280339285. The cubic root of 18316928 is about 263.6033222310.

The spelling of 18316928 in words is "eighteen million, three hundred sixteen thousand, nine hundred twenty-eight".