30280380928 has 160 divisors (see below), whose sum is σ = 71696553984. Its totient is φ = 12506959872.

The previous prime is 30280380887. The next prime is 30280380971. The reversal of 30280380928 is 82908308203.

It is a super-2 number, since 2×30280380928² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11284675 + ... + 11287357.

Almost surely, 2^30280380928 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 30280380928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35848276992).

30280380928 is an abundant number, since it is smaller than the sum of its proper divisors (41416173056).

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

30280380928 is an equidigital number, since it uses as much as digits as its factorization.

30280380928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2822 (or 2806 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The spelling of 30280380928 in words is "thirty billion, two hundred eighty million, three hundred eighty thousand, nine hundred twenty-eight".