30305421936 has 120 divisors (see below), whose sum is σ = 87666234240. Its totient is φ = 9762854400.

The previous prime is 30305421929. The next prime is 30305421947. The reversal of 30305421936 is 63912450303.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 30305421936.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3660810 + ... + 3669078.

It is an arithmetic number, because the mean of its divisors is an integer number (730551952).

Almost surely, 2^30305421936 is an apocalyptic number.

30305421936 is a gapful number since it is divisible by the number (36) 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 30305421936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43833117120).

30305421936 is an abundant number, since it is smaller than the sum of its proper divisors (57360812304).

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

30305421936 is a wasteful number, since it uses less digits than its factorization.

30305421936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9135 (or 9126 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The spelling of 30305421936 in words is "thirty billion, three hundred five million, four hundred twenty-one thousand, nine hundred thirty-six".