630308 has 12 divisors (see below), whose sum is σ = 1260672. Its totient is φ = 270120.

The previous prime is 630307. The next prime is 630319. The reversal of 630308 is 803036.

630308 is an admirable number.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 630308.

It is not an unprimeable number, because it can be changed into a prime (630307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11228 + ... + 11283.

It is an arithmetic number, because the mean of its divisors is an integer number (105056).

2⁶³⁰³⁰⁸ is an apocalyptic number.

It is an amenable number.

630308 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

630308 is a wasteful number, since it uses less digits than its factorization.

630308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22522 (or 22520 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 630308 is about 793.9193913742. The cubic root of 630308 is about 85.7401567409.

The spelling of 630308 in words is "six hundred thirty thousand, three hundred eight".