628748 has 12 divisors (see below), whose sum is σ = 1158360. Its totient is φ = 297792.

The previous prime is 628721. The next prime is 628753. The reversal of 628748 is 847826.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4061 + ... + 4212.

It is an arithmetic number, because the mean of its divisors is an integer number (96530).

2⁶²⁸⁷⁴⁸ is an apocalyptic number.

It is an amenable number.

628748 is a deficient number, since it is larger than the sum of its proper divisors (529612).

628748 is a wasteful number, since it uses less digits than its factorization.

628748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8296 (or 8294 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The square root of 628748 is about 792.9363152234. The cubic root of 628748 is about 85.6693632329.

The spelling of 628748 in words is "six hundred twenty-eight thousand, seven hundred forty-eight".