30013139 has 8 divisors (see below), whose sum is σ = 32609472. Its totient is φ = 27457920.

The previous prime is 30013133. The next prime is 30013153. The reversal of 30013139 is 93131003.

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

It is a cyclic number.

It is not a de Polignac number, because 30013139 - 2²⁰ = 28964563 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30013139.

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 7 ways as a sum of consecutive naturals, for example, 8747 + ... + 11684.

It is an arithmetic number, because the mean of its divisors is an integer number (4076184).

Almost surely, 2^30013139 is an apocalyptic number.

30013139 is a deficient number, since it is larger than the sum of its proper divisors (2596333).

30013139 is a wasteful number, since it uses less digits than its factorization.

30013139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20557.

The product of its (nonzero) digits is 243, while the sum is 20.

The square root of 30013139 is about 5478.4248648676. The cubic root of 30013139 is about 310.7686061167.

The spelling of 30013139 in words is "thirty million, thirteen thousand, one hundred thirty-nine".