628574928 has 40 divisors (see below), whose sum is σ = 1646698176. Its totient is φ = 206572800.

The previous prime is 628574923. The next prime is 628574939. The reversal of 628574928 is 829475826.

628574928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×628574928² = 790212880220410368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628574923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88813 + ... + 95628.

Almost surely, 2^628574928 is an apocalyptic number.

It is an amenable number.

628574928 is an abundant number, since it is smaller than the sum of its proper divisors (1018123248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

628574928 is a wasteful number, since it uses less digits than its factorization.

628574928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184523 (or 184517 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 51.

The square root of 628574928 is about 25071.3966104802. The cubic root of 628574928 is about 856.6150193360.

The spelling of 628574928 in words is "six hundred twenty-eight million, five hundred seventy-four thousand, nine hundred twenty-eight".