30906139882 has 8 divisors (see below), whose sum is σ = 46366553700. Its totient is φ = 15450621984.

The previous prime is 30906139829. The next prime is 30906139897. The reversal of 30906139882 is 28893160903.

It can be written as a sum of positive squares in 2 ways, for example, as 29700730921 + 1205408961 = 172339^2 + 34719^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1208157 + ... + 1233472.

Almost surely, 2^30906139882 is an apocalyptic number.

30906139882 is a deficient number, since it is larger than the sum of its proper divisors (15460413818).

30906139882 is a wasteful number, since it uses less digits than its factorization.

30906139882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2447960.

The product of its (nonzero) digits is 559872, while the sum is 49.

The spelling of 30906139882 in words is "thirty billion, nine hundred six million, one hundred thirty-nine thousand, eight hundred eighty-two".