628923544 has 32 divisors (see below), whose sum is σ = 1206187200. Its totient is φ = 307294720.

The previous prime is 628923511. The next prime is 628923557. The reversal of 628923544 is 445329826.

628923544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 628923544.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461424 + ... + 462784.

It is an arithmetic number, because the mean of its divisors is an integer number (37693350).

Almost surely, 2^628923544 is an apocalyptic number.

It is an amenable number.

628923544 is a deficient number, since it is larger than the sum of its proper divisors (577263656).

628923544 is a wasteful number, since it uses less digits than its factorization.

628923544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2643 (or 2639 counting only the distinct ones).

The product of its digits is 414720, while the sum is 43.

The square root of 628923544 is about 25078.3481114686. The cubic root of 628923544 is about 856.7733534222.

The spelling of 628923544 in words is "six hundred twenty-eight million, nine hundred twenty-three thousand, five hundred forty-four".