628826768 has 20 divisors (see below), whose sum is σ = 1241341308. Its totient is φ = 308480640.

The previous prime is 628826767. The next prime is 628826789. The reversal of 628826768 is 867628826.

It can be written as a sum of positive squares in 2 ways, for example, as 366645904 + 262180864 = 19148^2 + 16192^2 .

It is a Harshad number since it is a multiple of its sum of digits (53).

It is not an unprimeable number, because it can be changed into a prime (628826767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369923 + ... + 371618.

Almost surely, 2^628826768 is an apocalyptic number.

It is an amenable number.

628826768 is a deficient number, since it is larger than the sum of its proper divisors (612514540).

628826768 is a wasteful number, since it uses less digits than its factorization.

628826768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741602 (or 741596 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 53.

The square root of 628826768 is about 25076.4185640613. The cubic root of 628826768 is about 856.7294056578.

The spelling of 628826768 in words is "six hundred twenty-eight million, eight hundred twenty-six thousand, seven hundred sixty-eight".