30115020000 has 240 divisors, whose sum is σ = 106384758480. Its totient is φ = 7412736000.

The previous prime is 30115019999. The next prime is 30115020017. The reversal of 30115020000 is 2051103.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 760696 + ... + 799304.

It is an arithmetic number, because the mean of its divisors is an integer number (443269827).

Almost surely, 2^30115020000 is an apocalyptic number.

30115020000 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 30115020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53192379240).

30115020000 is an abundant number, since it is smaller than the sum of its proper divisors (76269738480).

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

30115020000 is a wasteful number, since it uses less digits than its factorization.

30115020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38655 (or 38632 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 12.

Adding to 30115020000 its reverse (2051103), we get a palindrome (30117071103).

The spelling of 30115020000 in words is "thirty billion, one hundred fifteen million, twenty thousand".