30280120320 has 384 divisors, whose sum is σ = 102781224000. Its totient is φ = 7596933120.

The previous prime is 30280120309. The next prime is 30280120357. The reversal of 30280120320 is 2302108203.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36525666 + ... + 36526494.

Almost surely, 2^30280120320 is an apocalyptic number.

30280120320 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 30280120320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51390612000).

30280120320 is an abundant number, since it is smaller than the sum of its proper divisors (72501103680).

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

30280120320 is a wasteful number, since it uses less digits than its factorization.

30280120320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929 (or 909 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 30280120320 its reverse (2302108203), we get a palindrome (32582228523).

The spelling of 30280120320 in words is "thirty billion, two hundred eighty million, one hundred twenty thousand, three hundred twenty".