2004344640 has 168 divisors, whose sum is σ = 6914071008. Its totient is φ = 532945920.

The previous prime is 2004344633. The next prime is 2004344653. The reversal of 2004344640 is 464434002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1275055 + ... + 1276625.

Almost surely, 2^2004344640 is an apocalyptic number.

2004344640 is a gapful number since it is divisible by the number (20) 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 2004344640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3457035504).

2004344640 is an abundant number, since it is smaller than the sum of its proper divisors (4909726368).

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

2004344640 is a wasteful number, since it uses less digits than its factorization.

2004344640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2037 (or 2024 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 2004344640 is about 44769.9077506309. The cubic root of 2004344640 is about 1260.8327073077.

Adding to 2004344640 its reverse (464434002), we get a palindrome (2468778642).

The spelling of 2004344640 in words is "two billion, four million, three hundred forty-four thousand, six hundred forty".