628238 has 16 divisors (see below), whose sum is σ = 1031856. Its totient is φ = 285120.

The previous prime is 628231. The next prime is 628261. The reversal of 628238 is 832826.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 628238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628231) 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, 1733 + ... + 2063.

It is an arithmetic number, because the mean of its divisors is an integer number (64491).

2⁶²⁸²³⁸ is an apocalyptic number.

628238 is a deficient number, since it is larger than the sum of its proper divisors (403618).

628238 is a wasteful number, since it uses less digits than its factorization.

628238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419.

The product of its digits is 4608, while the sum is 29.

The square root of 628238 is about 792.6146604751. The cubic root of 628238 is about 85.6461938053.

The spelling of 628238 in words is "six hundred twenty-eight thousand, two hundred thirty-eight".