628085856 has 24 divisors (see below), whose sum is σ = 1648725624. Its totient is φ = 209361920.

The previous prime is 628085851. The next prime is 628085897. The reversal of 628085856 is 658580826.

628085856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628085851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3271185 + ... + 3271376.

It is an arithmetic number, because the mean of its divisors is an integer number (68696901).

Almost surely, 2^628085856 is an apocalyptic number.

It is an amenable number.

628085856 is an abundant number, since it is smaller than the sum of its proper divisors (1020639768).

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

628085856 is a wasteful number, since it uses less digits than its factorization.

628085856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6542574 (or 6542566 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 48.

The square root of 628085856 is about 25061.6411274282. The cubic root of 628085856 is about 856.3927943713.

The spelling of 628085856 in words is "six hundred twenty-eight million, eighty-five thousand, eight hundred fifty-six".