30021304320 has 720 divisors, whose sum is σ = 124614211680. Its totient is φ = 6837239808.

The previous prime is 30021304307. The next prime is 30021304381. The reversal of 30021304320 is 2340312003.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 30021304293 and 30021304302.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 108380022 + ... + 108380298.

It is an arithmetic number, because the mean of its divisors is an integer number (173075294).

Almost surely, 2^30021304320 is an apocalyptic number.

30021304320 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 30021304320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62307105840).

30021304320 is an abundant number, since it is smaller than the sum of its proper divisors (94592907360).

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

30021304320 is an equidigital number, since it uses as much as digits as its factorization.

30021304320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 30021304320 its reverse (2340312003), we get a palindrome (32361616323).

The spelling of 30021304320 in words is "thirty billion, twenty-one million, three hundred four thousand, three hundred twenty".