628850 has 12 divisors (see below), whose sum is σ = 1169754. Its totient is φ = 251520.

The previous prime is 628841. The next prime is 628861. The reversal of 628850 is 58826.

It is a happy number.

It is a Cunningham number, because it is equal to 793²+1.

It can be written as a sum of positive squares in 3 ways, for example, as 579121 + 49729 = 761^2 + 223^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6239 + ... + 6338.

2⁶²⁸⁸⁵⁰ is an apocalyptic number.

628850 is a deficient number, since it is larger than the sum of its proper divisors (540904).

628850 is a wasteful number, since it uses less digits than its factorization.

628850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12589 (or 12584 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 628850 is about 793.0006305168. Note that the first 3 decimals coincide. The cubic root of 628850 is about 85.6739956148.

The spelling of 628850 in words is "six hundred twenty-eight thousand, eight hundred fifty".