30809049 has 32 divisors (see below), whose sum is σ = 46293120. Its totient is φ = 18127872.

The previous prime is 30809047. The next prime is 30809099. The reversal of 30809049 is 94090803.

It is not a de Polignac number, because 30809049 - 2¹ = 30809047 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30809047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54442 + ... + 55004.

It is an arithmetic number, because the mean of its divisors is an integer number (1446660).

Almost surely, 2^30809049 is an apocalyptic number.

It is an amenable number.

30809049 is a deficient number, since it is larger than the sum of its proper divisors (15484071).

30809049 is a wasteful number, since it uses less digits than its factorization.

30809049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 30809049 is about 5550.5899686430. The cubic root of 30809049 is about 313.4917365912.

The spelling of 30809049 in words is "thirty million, eight hundred nine thousand, forty-nine".