30138221238 has 16 divisors (see below), whose sum is σ = 61678220736. Its totient is φ = 9812444040.

The previous prime is 30138221221. The next prime is 30138221257. The reversal of 30138221238 is 83212283103.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30138221199 and 30138221208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58407148 + ... + 58407663.

It is an arithmetic number, because the mean of its divisors is an integer number (3854888796).

Almost surely, 2^30138221238 is an apocalyptic number.

30138221238 is an abundant number, since it is smaller than the sum of its proper divisors (31539999498).

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

30138221238 is a wasteful number, since it uses less digits than its factorization.

30138221238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116814859.

The product of its (nonzero) digits is 13824, while the sum is 33.

The spelling of 30138221238 in words is "thirty billion, one hundred thirty-eight million, two hundred twenty-one thousand, two hundred thirty-eight".