18423168 has 32 divisors (see below), whose sum is σ = 48937560. Its totient is φ = 6140928.

The previous prime is 18423157. The next prime is 18423169. The reversal of 18423168 is 86132481.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18423169) 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, 23605 + ... + 24372.

Almost surely, 2^18423168 is an apocalyptic number.

It is an amenable number.

18423168 is an abundant number, since it is smaller than the sum of its proper divisors (30514392).

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

18423168 is an equidigital number, since it uses as much as digits as its factorization.

18423168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47994 (or 47982 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 18423168 is about 4292.2218022838. The cubic root of 18423168 is about 264.1119818783. Note that the first 3 decimals are identical.

The spelling of 18423168 in words is "eighteen million, four hundred twenty-three thousand, one hundred sixty-eight".