630328320 has 132 divisors (see below), whose sum is σ = 2184230880. Its totient is φ = 168075264.

The previous prime is 630328289. The next prime is 630328331. The reversal of 630328320 is 23823036.

630328320 is a `hidden beast` number, since 630 + 3 + 2 + 8 + 3 + 20 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39241 + ... + 52919.

Almost surely, 2^630328320 is an apocalyptic number.

630328320 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 630328320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1092115440).

630328320 is an abundant number, since it is smaller than the sum of its proper divisors (1553902560).

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

630328320 is a wasteful number, since it uses less digits than its factorization.

630328320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13710 (or 13689 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 630328320 is about 25106.3402350880. The cubic root of 630328320 is about 857.4107810061.

The spelling of 630328320 in words is "six hundred thirty million, three hundred twenty-eight thousand, three hundred twenty".