1004322816 has 270 divisors, whose sum is σ = 3399248580. Its totient is φ = 284884992.

The previous prime is 1004322799. The next prime is 1004322833. The reversal of 1004322816 is 6182234001.

It is an interprime number because it is at equal distance from previous prime (1004322799) and next prime (1004322833).

It is a self number, because there is not a number n which added to its sum of digits gives 1004322816.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7225275 + ... + 7225413.

Almost surely, 2^1004322816 is an apocalyptic number.

1004322816 is a gapful number since it is divisible by the number (16) 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 1004322816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1699624290).

1004322816 is an abundant number, since it is smaller than the sum of its proper divisors (2394925764).

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

1004322816 is an equidigital number, since it uses as much as digits as its factorization.

1004322816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1004322816 is about 31691.0526174187. The cubic root of 1004322816 is about 1001.4388673345.

Adding to 1004322816 its reverse (6182234001), we get a palindrome (7186556817).

The spelling of 1004322816 in words is "one billion, four million, three hundred twenty-two thousand, eight hundred sixteen".