628512028 has 12 divisors (see below), whose sum is σ = 1100345400. Its totient is φ = 314127632.

The previous prime is 628512019. The next prime is 628512043. The reversal of 628512028 is 820215826.

628512028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 628511984 and 628512002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20626 + ... + 41017.

It is an arithmetic number, because the mean of its divisors is an integer number (91695450).

Almost surely, 2^628512028 is an apocalyptic number.

It is an amenable number.

628512028 is a deficient number, since it is larger than the sum of its proper divisors (471833372).

628512028 is a wasteful number, since it uses less digits than its factorization.

628512028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64196 (or 64194 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 628512028 is about 25070.1421615435. The cubic root of 628512028 is about 856.5864452394.

It can be divided in two parts, 62851202 and 8, that multiplied together give a triangular number (502809616 = T₃₁₇₁₁).

The spelling of 628512028 in words is "six hundred twenty-eight million, five hundred twelve thousand, twenty-eight".