630729928 has 32 divisors (see below), whose sum is σ = 1261936800. Its totient is φ = 294668928.

The previous prime is 630729923. The next prime is 630729929. The reversal of 630729928 is 829927036.

It is not an unprimeable number, because it can be changed into a prime (630729923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17326 + ... + 39517.

It is an arithmetic number, because the mean of its divisors is an integer number (39435525).

Almost surely, 2^630729928 is an apocalyptic number.

It is an amenable number.

630729928 is an abundant number, since it is smaller than the sum of its proper divisors (631206872).

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

630729928 is a wasteful number, since it uses less digits than its factorization.

630729928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56941 (or 56937 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 630729928 is about 25114.3371005488. The cubic root of 630729928 is about 857.5928395261.

The spelling of 630729928 in words is "six hundred thirty million, seven hundred twenty-nine thousand, nine hundred twenty-eight".