628473520 has 40 divisors (see below), whose sum is σ = 1464656256. Its totient is φ = 250795008.

The previous prime is 628473511. The next prime is 628473533. The reversal of 628473520 is 25374826.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 628473520.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25569 + ... + 43711.

Almost surely, 2^628473520 is an apocalyptic number.

It is an amenable number.

628473520 is an abundant number, since it is smaller than the sum of its proper divisors (836182736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

628473520 is a wasteful number, since it uses less digits than its factorization.

628473520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18589 (or 18583 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 628473520 is about 25069.3741445613. The cubic root of 628473520 is about 856.5689509550.

The spelling of 628473520 in words is "six hundred twenty-eight million, four hundred seventy-three thousand, five hundred twenty".