5721815328 has 96 divisors (see below), whose sum is σ = 15627386880. Its totient is φ = 1831092480.

The previous prime is 5721815299. The next prime is 5721815357. The reversal of 5721815328 is 8235181275.

It is an interprime number because it is at equal distance from previous prime (5721815299) and next prime (5721815357).

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 5721815328.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370383 + ... + 385521.

It is an arithmetic number, because the mean of its divisors is an integer number (162785280).

Almost surely, 2^5721815328 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 5721815328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7813693440).

5721815328 is an abundant number, since it is smaller than the sum of its proper divisors (9905571552).

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

5721815328 is a wasteful number, since it uses less digits than its factorization.

5721815328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15310 (or 15302 counting only the distinct ones).

The product of its digits is 134400, while the sum is 42.

The square root of 5721815328 is about 75642.6819196675. The cubic root of 5721815328 is about 1788.5919795106.

The spelling of 5721815328 in words is "five billion, seven hundred twenty-one million, eight hundred fifteen thousand, three hundred twenty-eight".