30020839156 has 48 divisors (see below), whose sum is σ = 66397322880. Its totient is φ = 11536197120.

The previous prime is 30020839133. The next prime is 30020839157. The reversal of 30020839156 is 65193802003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30020839157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 645121 + ... + 690088.

It is an arithmetic number, because the mean of its divisors is an integer number (1383277560).

Almost surely, 2^30020839156 is an apocalyptic number.

It is an amenable number.

30020839156 is an abundant number, since it is smaller than the sum of its proper divisors (36376483724).

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

30020839156 is a wasteful number, since it uses less digits than its factorization.

30020839156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1335304 (or 1335302 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 30020839156 in words is "thirty billion, twenty million, eight hundred thirty-nine thousand, one hundred fifty-six".