30805549 has 8 divisors (see below), whose sum is σ = 31620992. Its totient is φ = 30000240.

The previous prime is 30805543. The next prime is 30805553. The reversal of 30805549 is 94550803.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30805549 - 2⁷ = 30805421 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 (30805543) 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 7 ways as a sum of consecutive naturals, for example, 3832 + ... + 8734.

It is an arithmetic number, because the mean of its divisors is an integer number (3952624).

Almost surely, 2^30805549 is an apocalyptic number.

It is an amenable number.

30805549 is a deficient number, since it is larger than the sum of its proper divisors (815443).

30805549 is a wasteful number, since it uses less digits than its factorization.

30805549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5067.

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

The square root of 30805549 is about 5550.2746778876. The cubic root of 30805549 is about 313.4798649424.

The spelling of 30805549 in words is "thirty million, eight hundred five thousand, five hundred forty-nine".