2556307928 has 8 divisors (see below), whose sum is σ = 4793077380. Its totient is φ = 1278153960.

The previous prime is 2556307913. The next prime is 2556307939. The reversal of 2556307928 is 8297036552.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159769238 + ... + 159769253.

Almost surely, 2^2556307928 is an apocalyptic number.

It is an amenable number.

2556307928 is a deficient number, since it is larger than the sum of its proper divisors (2236769452).

2556307928 is a wasteful number, since it uses less digits than its factorization.

2556307928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319538497 (or 319538493 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 47.

The square root of 2556307928 is about 50559.9439081967. The cubic root of 2556307928 is about 1367.3227998601.

The spelling of 2556307928 in words is "two billion, five hundred fifty-six million, three hundred seven thousand, nine hundred twenty-eight".