30029139 has 24 divisors (see below), whose sum is σ = 52183040. Its totient is φ = 16255728.

The previous prime is 30029137. The next prime is 30029147. The reversal of 30029139 is 93192003.

It is not a de Polignac number, because 30029139 - 2¹ = 30029137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30029137) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 11347 + ... + 13740.

Almost surely, 2^30029139 is an apocalyptic number.

30029139 is a deficient number, since it is larger than the sum of its proper divisors (22153901).

30029139 is a wasteful number, since it uses less digits than its factorization.

30029139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25119 (or 25116 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 30029139 is about 5479.8849440476. The cubic root of 30029139 is about 310.8238198725.

The spelling of 30029139 in words is "thirty million, twenty-nine thousand, one hundred thirty-nine".