2318004 has 72 divisors (see below), whose sum is σ = 6558720. Its totient is φ = 707616.

The previous prime is 2318003. The next prime is 2318021. The reversal of 2318004 is 4008132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2318003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18189 + ... + 18315.

2^2318004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2318004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3279360).

2318004 is an abundant number, since it is smaller than the sum of its proper divisors (4240716).

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

2318004 is a wasteful number, since it uses less digits than its factorization.

2318004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2318004 is about 1522.4992610836. The cubic root of 2318004 is about 132.3441433106.

2318004 divided by its sum of digits (18) gives a triangular number (128778 = T₅₀₇).

The spelling of 2318004 in words is "two million, three hundred eighteen thousand, four".