2805248128 has 16 divisors (see below), whose sum is σ = 5588580510. Its totient is φ = 1402624000.

The previous prime is 2805248123. The next prime is 2805248191. The reversal of 2805248128 is 8218425082.

It can be written as a sum of positive squares in only one way, i.e., 2557122624 + 248125504 = 50568^2 + 15752^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (2805248123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10957873 + ... + 10958128.

Almost surely, 2^2805248128 is an apocalyptic number.

It is an amenable number.

2805248128 is a deficient number, since it is larger than the sum of its proper divisors (2783332382).

2805248128 is an equidigital number, since it uses as much as digits as its factorization.

2805248128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21916015 (or 21916003 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 40.

The square root of 2805248128 is about 52964.5931542951. The cubic root of 2805248128 is about 1410.3397950408.

The spelling of 2805248128 in words is "two billion, eight hundred five million, two hundred forty-eight thousand, one hundred twenty-eight".