630280 has 32 divisors (see below), whose sum is σ = 1621440. Its totient is φ = 216000.

The previous prime is 630263. The next prime is 630281. The reversal of 630280 is 82036.

It is not an unprimeable number, because it can be changed into a prime (630281) by changing a digit.

630280 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 846 + ... + 1405.

It is an arithmetic number, because the mean of its divisors is an integer number (50670).

2⁶³⁰²⁸⁰ is an apocalyptic number.

It is an amenable number.

630280 is an abundant number, since it is smaller than the sum of its proper divisors (991160).

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

630280 is a wasteful number, since it uses less digits than its factorization.

630280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2269 (or 2265 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 630280 is about 793.9017571463. The cubic root of 630280 is about 85.7388871182.

It can be divided in two parts, 630 and 280, that multiplied together give a square (176400 = 420²).

The spelling of 630280 in words is "six hundred thirty thousand, two hundred eighty".