30639307020 has 144 divisors (see below), whose sum is σ = 100320933888. Its totient is φ = 6966476160.

The previous prime is 30639307019. The next prime is 30639307073. The reversal of 30639307020 is 2070393603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 534259 + ... + 588821.

It is an arithmetic number, because the mean of its divisors is an integer number (696673152).

Almost surely, 2^30639307020 is an apocalyptic number.

30639307020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30639307020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50160466944).

30639307020 is an abundant number, since it is smaller than the sum of its proper divisors (69681626868).

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

30639307020 is a wasteful number, since it uses less digits than its factorization.

30639307020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54780 (or 54771 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 33.

The spelling of 30639307020 in words is "thirty billion, six hundred thirty-nine million, three hundred seven thousand, twenty".