628888 has 16 divisors (see below), whose sum is σ = 1270080. Its totient is φ = 290208.

The previous prime is 628877. The next prime is 628909. The reversal of 628888 is 888826.

It is a self number, because there is not a number n which added to its sum of digits gives 628888.

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, 2920 + ... + 3127.

It is an arithmetic number, because the mean of its divisors is an integer number (79380).

2⁶²⁸⁸⁸⁸ is an apocalyptic number.

It is an amenable number.

628888 is an abundant number, since it is smaller than the sum of its proper divisors (641192).

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

628888 is a wasteful number, since it uses less digits than its factorization.

628888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6066 (or 6062 counting only the distinct ones).

The product of its digits is 49152, while the sum is 40.

The square root of 628888 is about 793.0245897827. The cubic root of 628888 is about 85.6757212761.

The spelling of 628888 in words is "six hundred twenty-eight thousand, eight hundred eighty-eight".