628255588 has 12 divisors (see below), whose sum is σ = 1099626220. Its totient is φ = 314076672.

The previous prime is 628255571. The next prime is 628255601. The reversal of 628255588 is 885552826.

628255588 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 262375204 + 365880384 = 16198^2 + 19128^2 .

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, 33448 + ... + 48736.

Almost surely, 2^628255588 is an apocalyptic number.

It is an amenable number.

628255588 is a deficient number, since it is larger than the sum of its proper divisors (471370632).

628255588 is a wasteful number, since it uses less digits than its factorization.

628255588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25566 (or 25564 counting only the distinct ones).

The product of its digits is 1536000, while the sum is 49.

The square root of 628255588 is about 25065.0271892931. The cubic root of 628255588 is about 856.4699304129.

The spelling of 628255588 in words is "six hundred twenty-eight million, two hundred fifty-five thousand, five hundred eighty-eight".