628445308 has 12 divisors (see below), whose sum is σ = 1100189160. Its totient is φ = 314105552.

The previous prime is 628445281. The next prime is 628445317. The reversal of 628445308 is 803544826.

628445308 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, 16591 + ... + 39142.

It is an arithmetic number, because the mean of its divisors is an integer number (91682430).

Almost surely, 2^628445308 is an apocalyptic number.

It is an amenable number.

628445308 is a deficient number, since it is larger than the sum of its proper divisors (471743852).

628445308 is a wasteful number, since it uses less digits than its factorization.

628445308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58556 (or 58554 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 40.

The square root of 628445308 is about 25068.8114596604. The cubic root of 628445308 is about 856.5561337166.

The spelling of 628445308 in words is "six hundred twenty-eight million, four hundred forty-five thousand, three hundred eight".