30678970920 has 256 divisors, whose sum is σ = 106764134400. Its totient is φ = 6987617280.

The previous prime is 30678970909. The next prime is 30678970951. The reversal of 30678970920 is 2907987603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1262485 + ... + 1286555.

It is an arithmetic number, because the mean of its divisors is an integer number (417047400).

Almost surely, 2^30678970920 is an apocalyptic number.

30678970920 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 30678970920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53382067200).

30678970920 is an abundant number, since it is smaller than the sum of its proper divisors (76085163480).

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

30678970920 is a wasteful number, since it uses less digits than its factorization.

30678970920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24160 (or 24156 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 51.

The spelling of 30678970920 in words is "thirty billion, six hundred seventy-eight million, nine hundred seventy thousand, nine hundred twenty".