1004003328 has 56 divisors (see below), whose sum is σ = 2677244328. Its totient is φ = 334659584.

The previous prime is 1004003321. The next prime is 1004003333. The reversal of 1004003328 is 8233004001.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004003321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4150 + ... + 45002.

Almost surely, 2^1004003328 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 1004003328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1338622164).

1004003328 is an abundant number, since it is smaller than the sum of its proper divisors (1673241000).

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

1004003328 is an frugal number, since it uses more digits than its factorization.

1004003328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40882 (or 40858 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1004003328 is about 31686.0115508405. The cubic root of 1004003328 is about 1001.3326658794.

Adding to 1004003328 its reverse (8233004001), we get a palindrome (9237007329).

The spelling of 1004003328 in words is "one billion, four million, three thousand, three hundred twenty-eight".