4537805728 has 48 divisors (see below), whose sum is σ = 9163967400. Its totient is φ = 2211030016.

The previous prime is 4537805719. The next prime is 4537805731. The reversal of 4537805728 is 8275087354.

It can be written as a sum of positive squares in 4 ways, for example, as 4482034704 + 55771024 = 66948^2 + 7468^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243726 + ... + 261682.

Almost surely, 2^4537805728 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 4537805728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4581983700).

4537805728 is an abundant number, since it is smaller than the sum of its proper divisors (4626161672).

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

4537805728 is a wasteful number, since it uses less digits than its factorization.

4537805728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18169 (or 18161 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 49.

The square root of 4537805728 is about 67363.2372143738. The cubic root of 4537805728 is about 1655.5741357099.

The spelling of 4537805728 in words is "four billion, five hundred thirty-seven million, eight hundred five thousand, seven hundred twenty-eight".