30805061 has 16 divisors (see below), whose sum is σ = 37676160. Its totient is φ = 24598080.

The previous prime is 30805009. The next prime is 30805079. The reversal of 30805061 is 16050803.

It is a cyclic number.

It is not a de Polignac number, because 30805061 - 2²² = 26610757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30805361) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6215 + ... + 10011.

It is an arithmetic number, because the mean of its divisors is an integer number (2354760).

Almost surely, 2^30805061 is an apocalyptic number.

It is an amenable number.

30805061 is a deficient number, since it is larger than the sum of its proper divisors (6871099).

30805061 is a wasteful number, since it uses less digits than its factorization.

30805061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3884.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 30805061 is about 5550.2307159252. The cubic root of 30805061 is about 313.4782096240.

Adding to 30805061 its reverse (16050803), we get a palindrome (46855864).

The spelling of 30805061 in words is "thirty million, eight hundred five thousand, sixty-one".