30809405 has 8 divisors (see below), whose sum is σ = 40332384. Its totient is φ = 22406800.

The previous prime is 30809369. The next prime is 30809411. The reversal of 30809405 is 50490803.

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

It is not a de Polignac number, because 30809405 - 2¹⁰ = 30808381 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280031 + ... + 280140.

It is an arithmetic number, because the mean of its divisors is an integer number (5041548).

Almost surely, 2^30809405 is an apocalyptic number.

It is an amenable number.

30809405 is a deficient number, since it is larger than the sum of its proper divisors (9522979).

30809405 is a wasteful number, since it uses less digits than its factorization.

30809405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560187.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 30809405 is about 5550.6220372135. The cubic root of 30809405 is about 313.4929440571.

The spelling of 30809405 in words is "thirty million, eight hundred nine thousand, four hundred five".