630320460 has 288 divisors, whose sum is σ = 2259425280. Its totient is φ = 128494080.

The previous prime is 630320447. The next prime is 630320491. The reversal of 630320460 is 64023036.

630320460 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×630320460² = 794607764589223200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 630320460.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4014702 + ... + 4014858.

Almost surely, 2^630320460 is an apocalyptic number.

630320460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 630320460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1129712640).

630320460 is an abundant number, since it is smaller than the sum of its proper divisors (1629104820).

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

630320460 is a wasteful number, since it uses less digits than its factorization.

630320460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 630320460 is about 25106.1837004352. The cubic root of 630320460 is about 857.4072171085.

Adding to 630320460 its reverse (64023036), we get a palindrome (694343496).

The spelling of 630320460 in words is "six hundred thirty million, three hundred twenty thousand, four hundred sixty".