628232776 has 16 divisors (see below), whose sum is σ = 1178207100. Its totient is φ = 314044224.

The previous prime is 628232753. The next prime is 628232783. The reversal of 628232776 is 677232826.

It can be written as a sum of positive squares in 2 ways, for example, as 626300676 + 1932100 = 25026^2 + 1390^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53310 + ... + 64018.

Almost surely, 2^628232776 is an apocalyptic number.

It is an amenable number.

628232776 is a deficient number, since it is larger than the sum of its proper divisors (549974324).

628232776 is a wasteful number, since it uses less digits than its factorization.

628232776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18048 (or 18044 counting only the distinct ones).

The product of its digits is 338688, while the sum is 43.

The square root of 628232776 is about 25064.5721288036. The cubic root of 628232776 is about 856.4595641283.

Subtracting 628232776 from its reverse (677232826), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 628232776 in words is "six hundred twenty-eight million, two hundred thirty-two thousand, seven hundred seventy-six".