628556552 has 32 divisors (see below), whose sum is σ = 1275886080. Its totient is φ = 288575040.

The previous prime is 628556549. The next prime is 628556563. The reversal of 628556552 is 255655826.

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, 4043 + ... + 35685.

It is an arithmetic number, because the mean of its divisors is an integer number (39871440).

Almost surely, 2^628556552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628556552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (637943040).

628556552 is an abundant number, since it is smaller than the sum of its proper divisors (647329528).

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

628556552 is a wasteful number, since it uses less digits than its factorization.

628556552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31853 (or 31849 counting only the distinct ones).

The product of its digits is 720000, while the sum is 44.

The square root of 628556552 is about 25071.0301344001. The cubic root of 628556552 is about 856.6066717175.

The spelling of 628556552 in words is "six hundred twenty-eight million, five hundred fifty-six thousand, five hundred fifty-two".