30020858028 has 108 divisors (see below), whose sum is σ = 88695085752. Its totient is φ = 8536631040.

The previous prime is 30020858011. The next prime is 30020858033. The reversal of 30020858028 is 82085802003.

30020858028 is a `hidden beast` number, since 30 + 0 + 20 + 8 + 580 + 28 = 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 = 30020857983 and 30020858001.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 331876 + ... + 412532.

It is an arithmetic number, because the mean of its divisors is an integer number (821250794).

Almost surely, 2^30020858028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30020858028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44347542876).

30020858028 is an abundant number, since it is smaller than the sum of its proper divisors (58674227724).

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

30020858028 is a wasteful number, since it uses less digits than its factorization.

30020858028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80892 (or 80880 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The spelling of 30020858028 in words is "thirty billion, twenty million, eight hundred fifty-eight thousand, twenty-eight".