2289528128 has 28 divisors (see below), whose sum is σ = 4617770292. Its totient is φ = 1125995520.

The previous prime is 2289528121. The next prime is 2289528149. The reversal of 2289528128 is 8218259822.

It can be written as a sum of positive squares in 2 ways, for example, as 20720704 + 2268807424 = 4552^2 + 47632^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2289528121) 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, 289325 + ... + 297132.

Almost surely, 2^2289528128 is an apocalyptic number.

It is an amenable number.

2289528128 is an abundant number, since it is smaller than the sum of its proper divisors (2328242164).

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

2289528128 is an equidigital number, since it uses as much as digits as its factorization.

2289528128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586530 (or 586520 counting only the distinct ones).

The product of its digits is 368640, while the sum is 47.

The square root of 2289528128 is about 47849.0138665365. The cubic root of 2289528128 is about 1317.9997497779. Note that the first 3 decimals are identical.

The spelling of 2289528128 in words is "two billion, two hundred eighty-nine million, five hundred twenty-eight thousand, one hundred twenty-eight".