18423004 has 24 divisors (see below), whose sum is σ = 33541200. Its totient is φ = 8843520.

The previous prime is 18422983. The next prime is 18423007. The reversal of 18423004 is 40032481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18423007) 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, 27627 + ... + 28285.

It is an arithmetic number, because the mean of its divisors is an integer number (1397550).

Almost surely, 2^18423004 is an apocalyptic number.

It is an amenable number.

18423004 is a deficient number, since it is larger than the sum of its proper divisors (15118196).

18423004 is a wasteful number, since it uses less digits than its factorization.

18423004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933 (or 931 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 18423004 is about 4292.2026979163. The cubic root of 18423004 is about 264.1111981822. Note that the first 4 decimals are identical.

Adding to 18423004 its reverse (40032481), we get a palindrome (58455485).

The spelling of 18423004 in words is "eighteen million, four hundred twenty-three thousand, four".