30000320020 has 144 divisors (see below), whose sum is σ = 73798478208. Its totient is φ = 10151412480.

The previous prime is 30000320017. The next prime is 30000320027. The reversal of 30000320020 is 2002300003.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 30000319979 and 30000320006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30000320027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4302577 + ... + 4309543.

It is an arithmetic number, because the mean of its divisors is an integer number (512489432).

Almost surely, 2^30000320020 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 30000320020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36899239104).

30000320020 is an abundant number, since it is smaller than the sum of its proper divisors (43798158188).

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

30000320020 is a wasteful number, since it uses less digits than its factorization.

30000320020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7070 (or 7045 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 10.

Adding to 30000320020 its reverse (2002300003), we get a palindrome (32002620023).

It can be divided in two parts, 300003 and 20020, that added together give a palindrome (320023).

The spelling of 30000320020 in words is "thirty billion, three hundred twenty thousand, twenty".