630887728 has 20 divisors (see below), whose sum is σ = 1223827920. Its totient is φ = 315061184.

The previous prime is 630887717. The next prime is 630887737. The reversal of 630887728 is 827788036.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10075 + ... + 36922.

It is an arithmetic number, because the mean of its divisors is an integer number (61191396).

Almost surely, 2^630887728 is an apocalyptic number.

It is an amenable number.

630887728 is a deficient number, since it is larger than the sum of its proper divisors (592940192).

630887728 is a wasteful number, since it uses less digits than its factorization.

630887728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47844 (or 47838 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 49.

The square root of 630887728 is about 25117.4785358722. The cubic root of 630887728 is about 857.6643528949.

The spelling of 630887728 in words is "six hundred thirty million, eight hundred eighty-seven thousand, seven hundred twenty-eight".