2556307930 has 32 divisors (see below), whose sum is σ = 5071429440. Its totient is φ = 919979520.

The previous prime is 2556307913. The next prime is 2556307939. The reversal of 2556307930 is 397036552.

2556307930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2556307939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109120 + ... + 130459.

It is an arithmetic number, because the mean of its divisors is an integer number (158482170).

Almost surely, 2^2556307930 is an apocalyptic number.

2556307930 is a deficient number, since it is larger than the sum of its proper divisors (2515121510).

2556307930 is a wasteful number, since it uses less digits than its factorization.

2556307930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239694.

The product of its (nonzero) digits is 170100, while the sum is 40.

The square root of 2556307930 is about 50559.9439279752. The cubic root of 2556307930 is about 1367.3228002167.

The spelling of 2556307930 in words is "two billion, five hundred fifty-six million, three hundred seven thousand, nine hundred thirty".