630321732 has 36 divisors (see below), whose sum is σ = 1677173680. Its totient is φ = 199048752.

The previous prime is 630321719. The next prime is 630321743. The reversal of 630321732 is 237123036.

630321732 is a `hidden beast` number, since 630 + 3 + 21 + 7 + 3 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 630321696 and 630321705.

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 11 ways as a sum of consecutive naturals, for example, 460078 + ... + 461445.

Almost surely, 2^630321732 is an apocalyptic number.

It is an amenable number.

630321732 is an abundant number, since it is smaller than the sum of its proper divisors (1046851948).

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

630321732 is a wasteful number, since it uses less digits than its factorization.

630321732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921552 (or 921547 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 27.

The square root of 630321732 is about 25106.2090328269. The cubic root of 630321732 is about 857.4077938634.

Adding to 630321732 its reverse (237123036), we get a palindrome (867444768).

The spelling of 630321732 in words is "six hundred thirty million, three hundred twenty-one thousand, seven hundred thirty-two".