30685873828 has 12 divisors (see below), whose sum is σ = 54435899980. Its totient is φ = 15132759552.

The previous prime is 30685873787. The next prime is 30685873831. The reversal of 30685873828 is 82837858603.

It can be written as a sum of positive squares in 2 ways, for example, as 23267841444 + 7418032384 = 152538^2 + 86128^2 .

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, 52544013 + ... + 52544596.

Almost surely, 2^30685873828 is an apocalyptic number.

It is an amenable number.

30685873828 is a deficient number, since it is larger than the sum of its proper divisors (23750026152).

30685873828 is a wasteful number, since it uses less digits than its factorization.

30685873828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105088686 (or 105088684 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 58.

The spelling of 30685873828 in words is "thirty billion, six hundred eighty-five million, eight hundred seventy-three thousand, eight hundred twenty-eight".