30804865 has 32 divisors (see below), whose sum is σ = 46126080. Its totient is φ = 19229184.

The previous prime is 30804859. The next prime is 30804877. The reversal of 30804865 is 56840803.

It is not a de Polignac number, because 30804865 - 2⁷ = 30804737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30804865.

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, 35517 + ... + 36373.

It is an arithmetic number, because the mean of its divisors is an integer number (1441440).

Almost surely, 2^30804865 is an apocalyptic number.

30804865 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30804865 is a deficient number, since it is larger than the sum of its proper divisors (15321215).

30804865 is a wasteful number, since it uses less digits than its factorization.

30804865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 30804865 is about 5550.2130589735. The cubic root of 30804865 is about 313.4775447780.

The spelling of 30804865 in words is "thirty million, eight hundred four thousand, eight hundred sixty-five".