2685708728 has 16 divisors (see below), whose sum is σ = 5048267760. Its totient is φ = 1339504000.

The previous prime is 2685708709. The next prime is 2685708737. The reversal of 2685708728 is 8278075862.

It is a self number, because there is not a number n which added to its sum of digits gives 2685708728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415388 + ... + 421803.

It is an arithmetic number, because the mean of its divisors is an integer number (315516735).

Almost surely, 2^2685708728 is an apocalyptic number.

It is an amenable number.

2685708728 is a deficient number, since it is larger than the sum of its proper divisors (2362559032).

2685708728 is a wasteful number, since it uses less digits than its factorization.

2685708728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837598 (or 837594 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 53.

The square root of 2685708728 is about 51823.8239422758. The cubic root of 2685708728 is about 1390.0154800477.

The spelling of 2685708728 in words is "two billion, six hundred eighty-five million, seven hundred eight thousand, seven hundred twenty-eight".