30420717852 has 96 divisors (see below), whose sum is σ = 83101777920. Its totient is φ = 8480640960.

The previous prime is 30420717841. The next prime is 30420717919. The reversal of 30420717852 is 25871702403.

It is a self number, because there is not a number n which added to its sum of digits gives 30420717852.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 1295149 + ... + 1318427.

It is an arithmetic number, because the mean of its divisors is an integer number (865643520).

Almost surely, 2^30420717852 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 30420717852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41550888960).

30420717852 is an abundant number, since it is smaller than the sum of its proper divisors (52681060068).

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

30420717852 is a wasteful number, since it uses less digits than its factorization.

30420717852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23671 (or 23669 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The spelling of 30420717852 in words is "thirty billion, four hundred twenty million, seven hundred seventeen thousand, eight hundred fifty-two".