630540828 has 48 divisors (see below), whose sum is σ = 1678928160. Its totient is φ = 204498432.

The previous prime is 630540811. The next prime is 630540871. The reversal of 630540828 is 828045036.

630540828 is a `hidden beast` number, since 6 + 30 + 540 + 82 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 630540792 and 630540801.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 74901 + ... + 82892.

It is an arithmetic number, because the mean of its divisors is an integer number (34977670).

Almost surely, 2^630540828 is an apocalyptic number.

It is an amenable number.

630540828 is an abundant number, since it is smaller than the sum of its proper divisors (1048387332).

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

630540828 is a wasteful number, since it uses less digits than its factorization.

630540828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157843 (or 157835 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 630540828 is about 25110.5720364949. The cubic root of 630540828 is about 857.5071255999.

The spelling of 630540828 in words is "six hundred thirty million, five hundred forty thousand, eight hundred twenty-eight".