628389356 has 24 divisors (see below), whose sum is σ = 1322926080. Its totient is φ = 255135312.

The previous prime is 628389323. The next prime is 628389361. The reversal of 628389356 is 653983826.

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, 590060 + ... + 591123.

It is an arithmetic number, because the mean of its divisors is an integer number (55121920).

Almost surely, 2^628389356 is an apocalyptic number.

It is an amenable number.

628389356 is an abundant number, since it is smaller than the sum of its proper divisors (694536724).

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

628389356 is a wasteful number, since it uses less digits than its factorization.

628389356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181213 (or 1181211 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 50.

The square root of 628389356 is about 25067.6954664764. The cubic root of 628389356 is about 856.5307125433.

The spelling of 628389356 in words is "six hundred twenty-eight million, three hundred eighty-nine thousand, three hundred fifty-six".