628788810 has 64 divisors (see below), whose sum is σ = 1677634560. Its totient is φ = 149783040.

The previous prime is 628788803. The next prime is 628788821. The reversal of 628788810 is 18887826.

628788810 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×628788810² = 790750735162432200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 628788810.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13915 + ... + 38094.

It is an arithmetic number, because the mean of its divisors is an integer number (26213040).

Almost surely, 2^628788810 is an apocalyptic number.

628788810 is an abundant number, since it is smaller than the sum of its proper divisors (1048845750).

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

628788810 is a wasteful number, since it uses less digits than its factorization.

628788810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52063.

The product of its (nonzero) digits is 344064, while the sum is 48.

The square root of 628788810 is about 25075.6617061245. The cubic root of 628788810 is about 856.7121669996.

The spelling of 628788810 in words is "six hundred twenty-eight million, seven hundred eighty-eight thousand, eight hundred ten".