30878675920 has 160 divisors (see below), whose sum is σ = 76155125760. Its totient is φ = 11627573760.

The previous prime is 30878675903. The next prime is 30878675929. The reversal of 30878675920 is 2957687803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30878675929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13790161 + ... + 13792399.

It is an arithmetic number, because the mean of its divisors is an integer number (475969536).

Almost surely, 2^30878675920 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 30878675920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38077562880).

30878675920 is an abundant number, since it is smaller than the sum of its proper divisors (45276449840).

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

30878675920 is a wasteful number, since it uses less digits than its factorization.

30878675920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2433 (or 2427 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 30878675920 in words is "thirty billion, eight hundred seventy-eight million, six hundred seventy-five thousand, nine hundred twenty".