2128803560 has 32 divisors (see below), whose sum is σ = 5158256040. Its totient is φ = 786019584.

The previous prime is 2128803557. The next prime is 2128803569. The reversal of 2128803560 is 653088212.

It can be written as a sum of positive squares in 4 ways, for example, as 1788105796 + 340697764 = 42286^2 + 18458^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2128803560.

It is not an unprimeable number, because it can be changed into a prime (2128803569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2046407 + ... + 2047446.

Almost surely, 2^2128803560 is an apocalyptic number.

2128803560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2128803560 is an abundant number, since it is smaller than the sum of its proper divisors (3029452480).

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

2128803560 is a wasteful number, since it uses less digits than its factorization.

2128803560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4093877 (or 4093873 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 2128803560 is about 46138.9592427051. The cubic root of 2128803560 is about 1286.4073988177.

The spelling of 2128803560 in words is "two billion, one hundred twenty-eight million, eight hundred three thousand, five hundred sixty".