630039930 has 32 divisors (see below), whose sum is σ = 1628411904. Its totient is φ = 155086656.

The previous prime is 630039923. The next prime is 630039961. The reversal of 630039930 is 39930036.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 630039891 and 630039900.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 807354 + ... + 808133.

It is an arithmetic number, because the mean of its divisors is an integer number (50887872).

Almost surely, 2^630039930 is an apocalyptic number.

630039930 is an abundant number, since it is smaller than the sum of its proper divisors (998371974).

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

630039930 is a wasteful number, since it uses less digits than its factorization.

630039930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615510.

The product of its (nonzero) digits is 13122, while the sum is 33.

The square root of 630039930 is about 25100.5962080585. The cubic root of 630039930 is about 857.2799992070.

Adding to 630039930 its reverse (39930036), we get a palindrome (669969966).

The spelling of 630039930 in words is "six hundred thirty million, thirty-nine thousand, nine hundred thirty".