30138105 has 32 divisors (see below), whose sum is σ = 50572800. Its totient is φ = 15305472.

The previous prime is 30138083. The next prime is 30138131. The reversal of 30138105 is 50183103.

It is a happy number.

It is not a de Polignac number, because 30138105 - 2⁶ = 30138041 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33927 + ... + 34803.

It is an arithmetic number, because the mean of its divisors is an integer number (1580400).

Almost surely, 2^30138105 is an apocalyptic number.

It is an amenable number.

30138105 is a deficient number, since it is larger than the sum of its proper divisors (20434695).

30138105 is a wasteful number, since it uses less digits than its factorization.

30138105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 30138105 is about 5489.8183030042. The cubic root of 30138105 is about 311.1993256319.

The spelling of 30138105 in words is "thirty million, one hundred thirty-eight thousand, one hundred five".