628856276 has 6 divisors (see below), whose sum is σ = 1100498490. Its totient is φ = 314428136.

The previous prime is 628856273. The next prime is 628856341. The reversal of 628856276 is 672658826.

It can be written as a sum of positive squares in only one way, i.e., 460531600 + 168324676 = 21460^2 + 12974^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628856273) by changing a digit.

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 as a sum of consecutive naturals, namely, 78607031 + ... + 78607038.

It is an arithmetic number, because the mean of its divisors is an integer number (183416415).

Almost surely, 2^628856276 is an apocalyptic number.

It is an amenable number.

628856276 is a deficient number, since it is larger than the sum of its proper divisors (471642214).

628856276 is a wasteful number, since it uses less digits than its factorization.

628856276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157214073 (or 157214071 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 50.

The square root of 628856276 is about 25077.0069186895. The cubic root of 628856276 is about 856.7428062620.

The spelling of 628856276 in words is "six hundred twenty-eight million, eight hundred fifty-six thousand, two hundred seventy-six".