30506105 has 16 divisors (see below), whose sum is σ = 42464640. Its totient is φ = 20604672.

The previous prime is 30506071. The next prime is 30506107. The reversal of 30506105 is 50160503.

It is a cyclic number.

It is not a de Polignac number, because 30506105 - 2¹⁰ = 30505081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30506107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4160 + ... + 8849.

It is an arithmetic number, because the mean of its divisors is an integer number (2654040).

Almost surely, 2^30506105 is an apocalyptic number.

30506105 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30506105 is a deficient number, since it is larger than the sum of its proper divisors (11958535).

30506105 is a wasteful number, since it uses less digits than its factorization.

30506105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13088.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 30506105 is about 5523.2332016673. The cubic root of 30506105 is about 312.4608334914.

Adding to 30506105 its reverse (50160503), we get a palindrome (80666608).

The spelling of 30506105 in words is "thirty million, five hundred six thousand, one hundred five".