30028856320 has 88 divisors (see below), whose sum is σ = 72844542000. Its totient is φ = 11876401152.

The previous prime is 30028856303. The next prime is 30028856323. The reversal of 30028856320 is 2365882003.

It is a self number, because there is not a number n which added to its sum of digits gives 30028856320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30028856323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422731 + ... + 488629.

Almost surely, 2^30028856320 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 30028856320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36422271000).

30028856320 is an abundant number, since it is smaller than the sum of its proper divisors (42815685680).

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

30028856320 is an equidigital number, since it uses as much as digits as its factorization.

30028856320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66013 (or 65995 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 30028856320 in words is "thirty billion, twenty-eight million, eight hundred fifty-six thousand, three hundred twenty".