30020543720 has 32 divisors (see below), whose sum is σ = 68305177800. Its totient is φ = 11873292288.

The previous prime is 30020543671. The next prime is 30020543737. The reversal of 30020543720 is 2734502003.

It can be written as a sum of positive squares in 4 ways, for example, as 25732651396 + 4287892324 = 160414^2 + 65482^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30020543720.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4212809 + ... + 4219928.

Almost surely, 2^30020543720 is an apocalyptic number.

It is an amenable number.

30020543720 is an abundant number, since it is smaller than the sum of its proper divisors (38284634080).

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

30020543720 is a wasteful number, since it uses less digits than its factorization.

30020543720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8432837 (or 8432833 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 26.

The spelling of 30020543720 in words is "thirty billion, twenty million, five hundred forty-three thousand, seven hundred twenty".