2840728066 has 16 divisors (see below), whose sum is σ = 4652144640. Its totient is φ = 1290217680.

The previous prime is 2840728039. The next prime is 2840728073. The reversal of 2840728066 is 6608270482.

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, 22341 + ... + 78616.

It is an arithmetic number, because the mean of its divisors is an integer number (290759040).

Almost surely, 2^2840728066 is an apocalyptic number.

2840728066 is a deficient number, since it is larger than the sum of its proper divisors (1811416574).

2840728066 is a wasteful number, since it uses less digits than its factorization.

2840728066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102249.

The product of its (nonzero) digits is 258048, while the sum is 43.

The square root of 2840728066 is about 53298.4808976766. The cubic root of 2840728066 is about 1416.2607543378.

The spelling of 2840728066 in words is "two billion, eight hundred forty million, seven hundred twenty-eight thousand, sixty-six".