630228320 has 24 divisors (see below), whose sum is σ = 1488914784. Its totient is φ = 252091264.

The previous prime is 630228307. The next prime is 630228323. The reversal of 630228320 is 23822036.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 630228320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630228323) 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, 1969304 + ... + 1969623.

It is an arithmetic number, because the mean of its divisors is an integer number (62038116).

Almost surely, 2^630228320 is an apocalyptic number.

It is an amenable number.

630228320 is an abundant number, since it is smaller than the sum of its proper divisors (858686464).

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

630228320 is a wasteful number, since it uses less digits than its factorization.

630228320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3938942 (or 3938934 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 630228320 is about 25104.3486272797. The cubic root of 630228320 is about 857.3654365880.

The spelling of 630228320 in words is "six hundred thirty million, two hundred twenty-eight thousand, three hundred twenty".