628444568 has 16 divisors (see below), whose sum is σ = 1180413000. Its totient is φ = 313667776.

The previous prime is 628444541. The next prime is 628444591. The reversal of 628444568 is 865444826.

628444568 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 64478 + ... + 73581.

Almost surely, 2^628444568 is an apocalyptic number.

It is an amenable number.

628444568 is a deficient number, since it is larger than the sum of its proper divisors (551968432).

628444568 is a wasteful number, since it uses less digits than its factorization.

628444568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138634 (or 138630 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 47.

The square root of 628444568 is about 25068.7967002806. The cubic root of 628444568 is about 856.5557975156. Note that the first 3 decimals are identical.

The spelling of 628444568 in words is "six hundred twenty-eight million, four hundred forty-four thousand, five hundred sixty-eight".