628191136 has 12 divisors (see below), whose sum is σ = 1236751362. Its totient is φ = 314095552.

The previous prime is 628191119. The next prime is 628191181. The reversal of 628191136 is 631191826.

628191136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 596336400 + 31854736 = 24420^2 + 5644^2 .

It is a junction number, because it is equal to n+sod(n) for n = 628191095 and 628191104.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9815455 + ... + 9815518.

Almost surely, 2^628191136 is an apocalyptic number.

It is an amenable number.

628191136 is a deficient number, since it is larger than the sum of its proper divisors (608560226).

628191136 is a wasteful number, since it uses less digits than its factorization.

628191136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19630983 (or 19630975 counting only the distinct ones).

The product of its digits is 15552, while the sum is 37.

The square root of 628191136 is about 25063.7414605242. The cubic root of 628191136 is about 856.4406413312.

The spelling of 628191136 in words is "six hundred twenty-eight million, one hundred ninety-one thousand, one hundred thirty-six".