30146809 has 12 divisors (see below), whose sum is σ = 38257488. Its totient is φ = 23490600.

The previous prime is 30146803. The next prime is 30146819. The reversal of 30146809 is 90864103.

It is not a de Polignac number, because 30146809 - 2³ = 30146801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30146801) 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 11 ways as a sum of consecutive naturals, for example, 27427 + ... + 28504.

It is an arithmetic number, because the mean of its divisors is an integer number (3188124).

Almost surely, 2^30146809 is an apocalyptic number.

It is an amenable number.

30146809 is a deficient number, since it is larger than the sum of its proper divisors (8110679).

30146809 is a wasteful number, since it uses less digits than its factorization.

30146809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55956 (or 55949 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 30146809 is about 5490.6109860379. The cubic root of 30146809 is about 311.2292812668.

The spelling of 30146809 in words is "thirty million, one hundred forty-six thousand, eight hundred nine".