30630938628 has 12 divisors (see below), whose sum is σ = 71472190160. Its totient is φ = 10210312872.

The previous prime is 30630938621. The next prime is 30630938671. The reversal of 30630938628 is 82683903603.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (30630938621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1276289098 + ... + 1276289121.

Almost surely, 2^30630938628 is an apocalyptic number.

It is an amenable number.

30630938628 is an abundant number, since it is smaller than the sum of its proper divisors (40841251532).

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

30630938628 is a wasteful number, since it uses less digits than its factorization.

30630938628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2552578226 (or 2552578224 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 48.

The spelling of 30630938628 in words is "thirty billion, six hundred thirty million, nine hundred thirty-eight thousand, six hundred twenty-eight".