2568449728 has 56 divisors (see below), whose sum is σ = 5678149680. Its totient is φ = 1144550400.

The previous prime is 2568449707. The next prime is 2568449747. The reversal of 2568449728 is 8279448652.

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, 29098 + ... + 77353.

It is an arithmetic number, because the mean of its divisors is an integer number (101395530).

Almost surely, 2^2568449728 is an apocalyptic number.

It is an amenable number.

2568449728 is an abundant number, since it is smaller than the sum of its proper divisors (3109699952).

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

2568449728 is a wasteful number, since it uses less digits than its factorization.

2568449728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106505 (or 106495 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 55.

The square root of 2568449728 is about 50679.8749801141. The cubic root of 2568449728 is about 1369.4841910660.

The spelling of 2568449728 in words is "two billion, five hundred sixty-eight million, four hundred forty-nine thousand, seven hundred twenty-eight".