30538128 has 20 divisors (see below), whose sum is σ = 78890288. Its totient is φ = 10179360.

The previous prime is 30538117. The next prime is 30538141. The reversal of 30538128 is 82183503.

It is a happy number.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 30538095 and 30538104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318058 + ... + 318153.

Almost surely, 2^30538128 is an apocalyptic number.

It is an amenable number.

30538128 is an abundant number, since it is smaller than the sum of its proper divisors (48352160).

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

30538128 is a wasteful number, since it uses less digits than its factorization.

30538128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636222 (or 636216 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 30538128 is about 5526.1313773742. The cubic root of 30538128 is about 312.5701278348.

The spelling of 30538128 in words is "thirty million, five hundred thirty-eight thousand, one hundred twenty-eight".