30013138 has 8 divisors (see below), whose sum is σ = 45348732. Its totient is φ = 14896896.

The previous prime is 30013133. The next prime is 30013153. The reversal of 30013138 is 83131003.

It can be written as a sum of positive squares in 2 ways, for example, as 26904969 + 3108169 = 5187^2 + 1763^2 .

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

It is not an unprimeable number, because it can be changed into a prime (30013133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54495 + ... + 55042.

Almost surely, 2^30013138 is an apocalyptic number.

30013138 is a deficient number, since it is larger than the sum of its proper divisors (15335594).

30013138 is a wasteful number, since it uses less digits than its factorization.

30013138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109676.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 30013138 is about 5478.4247736005. The cubic root of 30013138 is about 310.7686026653.

The spelling of 30013138 in words is "thirty million, thirteen thousand, one hundred thirty-eight".