18344004 has 24 divisors (see below), whose sum is σ = 48917568. Its totient is φ = 5241120.

The previous prime is 18343943. The next prime is 18344017. The reversal of 18344004 is 40044381.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109107 + ... + 109274.

It is an arithmetic number, because the mean of its divisors is an integer number (2038232).

Almost surely, 2^18344004 is an apocalyptic number.

18344004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18344004 is an abundant number, since it is smaller than the sum of its proper divisors (30573564).

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

18344004 is a wasteful number, since it uses less digits than its factorization.

18344004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218395 (or 218393 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 18344004 is about 4282.9900770373. The cubic root of 18344004 is about 263.7331440303.

Adding to 18344004 its reverse (40044381), we get a palindrome (58388385).

The spelling of 18344004 in words is "eighteen million, three hundred forty-four thousand, four".