30320520000 has 560 divisors, whose sum is σ = 107978935680. Its totient is φ = 7479296000.

The previous prime is 30320519987. The next prime is 30320520001. The reversal of 30320520000 is 2502303.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30320520001) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 181559917 + ... + 181560083.

It is an arithmetic number, because the mean of its divisors is an integer number (192819528).

Almost surely, 2^30320520000 is an apocalyptic number.

30320520000 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 30320520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53989467840).

30320520000 is an abundant number, since it is smaller than the sum of its proper divisors (77658415680).

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

30320520000 is a wasteful number, since it uses less digits than its factorization.

30320520000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 15.

The spelling of 30320520000 in words is "thirty billion, three hundred twenty million, five hundred twenty thousand".