628015856 has 40 divisors (see below), whose sum is σ = 1352663424. Its totient is φ = 280500480.

The previous prime is 628015811. The next prime is 628015867. The reversal of 628015856 is 658510826.

628015856 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 7 ways as a sum of consecutive naturals, for example, 42251 + ... + 55146.

Almost surely, 2^628015856 is an apocalyptic number.

It is an amenable number.

628015856 is an abundant number, since it is smaller than the sum of its proper divisors (724647568).

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

628015856 is a wasteful number, since it uses less digits than its factorization.

628015856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97449 (or 97443 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 41.

The square root of 628015856 is about 25060.2445319275. The cubic root of 628015856 is about 856.3609782736.

The spelling of 628015856 in words is "six hundred twenty-eight million, fifteen thousand, eight hundred fifty-six".