2801428865 has 32 divisors (see below), whose sum is σ = 3579641856. Its totient is φ = 2100288960.

The previous prime is 2801428829. The next prime is 2801428867. The reversal of 2801428865 is 5688241082.

2801428865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2801428865 - 2²⁸ = 2532993409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2801428867) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1211060 + ... + 1213370.

It is an arithmetic number, because the mean of its divisors is an integer number (111863808).

Almost surely, 2^2801428865 is an apocalyptic number.

It is an amenable number.

2801428865 is a deficient number, since it is larger than the sum of its proper divisors (778212991).

2801428865 is a wasteful number, since it uses less digits than its factorization.

2801428865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2549.

The product of its (nonzero) digits is 245760, while the sum is 44.

The square root of 2801428865 is about 52928.5260044147. The cubic root of 2801428865 is about 1409.6994589395.

The spelling of 2801428865 in words is "two billion, eight hundred one million, four hundred twenty-eight thousand, eight hundred sixty-five".