628550208 has 252 divisors, whose sum is σ = 2131850448. Its totient is φ = 175518720.

The previous prime is 628550189. The next prime is 628550239. The reversal of 628550208 is 802055826.

628550208 is a `hidden beast` number, since 628 + 5 + 5 + 0 + 20 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1070491 + ... + 1071077.

It is an arithmetic number, because the mean of its divisors is an integer number (8459724).

Almost surely, 2^628550208 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 628550208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1065925224).

628550208 is an abundant number, since it is smaller than the sum of its proper divisors (1503300240).

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

628550208 is a wasteful number, since it uses less digits than its factorization.

628550208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642 (or 616 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 628550208 is about 25070.9036135517. The cubic root of 628550208 is about 856.6037898071.

The spelling of 628550208 in words is "six hundred twenty-eight million, five hundred fifty thousand, two hundred eight".