30729516 has 12 divisors (see below), whose sum is σ = 71702232. Its totient is φ = 10243168.

The previous prime is 30729509. The next prime is 30729521. The reversal of 30729516 is 61592703.

It is a tau number, because it is divible by the number of its divisors (12).

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, 1280385 + ... + 1280408.

It is an arithmetic number, because the mean of its divisors is an integer number (5975186).

Almost surely, 2^30729516 is an apocalyptic number.

It is an amenable number.

30729516 is an abundant number, since it is smaller than the sum of its proper divisors (40972716).

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

30729516 is a wasteful number, since it uses less digits than its factorization.

30729516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2560800 (or 2560798 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 30729516 is about 5543.4209654328. The cubic root of 30729516 is about 313.2217463929.

The spelling of 30729516 in words is "thirty million, seven hundred twenty-nine thousand, five hundred sixteen".