628560880 has 20 divisors (see below), whose sum is σ = 1461404232. Its totient is φ = 251424320.

The previous prime is 628560871. The next prime is 628560913. The reversal of 628560880 is 88065826.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

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, 3928426 + ... + 3928585.

Almost surely, 2^628560880 is an apocalyptic number.

It is an amenable number.

628560880 is an abundant number, since it is smaller than the sum of its proper divisors (832843352).

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

628560880 is a wasteful number, since it uses less digits than its factorization.

628560880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7857024 (or 7857018 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 628560880 is about 25071.1164490136. The cubic root of 628560880 is about 856.6086378016.

The spelling of 628560880 in words is "six hundred twenty-eight million, five hundred sixty thousand, eight hundred eighty".