630228 has 24 divisors (see below), whose sum is σ = 1522080. Its totient is φ = 202720.

The previous prime is 630197. The next prime is 630229. The reversal of 630228 is 822036.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630229) by changing a digit.

630228 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 558 + ... + 1253.

It is an arithmetic number, because the mean of its divisors is an integer number (63420).

2⁶³⁰²²⁸ is an apocalyptic number.

It is an amenable number.

630228 is an abundant number, since it is smaller than the sum of its proper divisors (891852).

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

630228 is a wasteful number, since it uses less digits than its factorization.

630228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847 (or 1845 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 630228 is about 793.8690068267. The cubic root of 630228 is about 85.7365291478.

It can be divided in two parts, 630 and 228, that added together give a palindrome (858).

The spelling of 630228 in words is "six hundred thirty thousand, two hundred twenty-eight".