18423104 has 112 divisors (see below), whose sum is σ = 46085760. Its totient is φ = 7127040.

The previous prime is 18423073. The next prime is 18423131. The reversal of 18423104 is 40132481.

It is a tau number, because it is divible by the number of its divisors (112).

It is a self number, because there is not a number n which added to its sum of digits gives 18423104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312227 + ... + 312285.

It is an arithmetic number, because the mean of its divisors is an integer number (411480).

Almost surely, 2^18423104 is an apocalyptic number.

18423104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18423104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23042880).

18423104 is an abundant number, since it is smaller than the sum of its proper divisors (27662656).

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

18423104 is a wasteful number, since it uses less digits than its factorization.

18423104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 18423104 is about 4292.2143469310. The cubic root of 18423104 is about 264.1116760462. Note that the first 3 decimals are identical.

Adding to 18423104 its reverse (40132481), we get a palindrome (58555585).

The spelling of 18423104 in words is "eighteen million, four hundred twenty-three thousand, one hundred four".