30009705 has 32 divisors (see below), whose sum is σ = 54079488. Its totient is φ = 14078400.

The previous prime is 30009689. The next prime is 30009731. The reversal of 30009705 is 50790003.

It is not a de Polignac number, because 30009705 - 2⁴ = 30009689 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2182 + ... + 8048.

It is an arithmetic number, because the mean of its divisors is an integer number (1689984).

Almost surely, 2^30009705 is an apocalyptic number.

It is an amenable number.

30009705 is a deficient number, since it is larger than the sum of its proper divisors (24069783).

30009705 is a wasteful number, since it uses less digits than its factorization.

30009705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5917.

The product of its (nonzero) digits is 945, while the sum is 24.

The square root of 30009705 is about 5478.1114446495. Note that the first 3 decimals coincide. The cubic root of 30009705 is about 310.7567533068.

Adding to 30009705 its reverse (50790003), we get a palindrome (80799708).

The spelling of 30009705 in words is "thirty million, nine thousand, seven hundred five".