30516865 has 32 divisors (see below), whose sum is σ = 39813120. Its totient is φ = 22411200.

The previous prime is 30516851. The next prime is 30516877. The reversal of 30516865 is 56861503.

It is not a de Polignac number, because 30516865 - 2¹⁷ = 30385793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30516865.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 429780 + ... + 429850.

It is an arithmetic number, because the mean of its divisors is an integer number (1244160).

Almost surely, 2^30516865 is an apocalyptic number.

It is an amenable number.

30516865 is a deficient number, since it is larger than the sum of its proper divisors (9296255).

30516865 is a wasteful number, since it uses less digits than its factorization.

30516865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 30516865 is about 5524.2071829358. The cubic root of 30516865 is about 312.4975658477.

The spelling of 30516865 in words is "thirty million, five hundred sixteen thousand, eight hundred sixty-five".