30205105 has 8 divisors (see below), whose sum is σ = 41424192. Its totient is φ = 20712048.

The previous prime is 30205103. The next prime is 30205139. The reversal of 30205105 is 50150203.

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

It is not a de Polignac number, because 30205105 - 2¹ = 30205103 is a prime.

It is a super-2 number, since 2×30205105² = 1824696736122050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30205103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431467 + ... + 431536.

It is an arithmetic number, because the mean of its divisors is an integer number (5178024).

Almost surely, 2^30205105 is an apocalyptic number.

30205105 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30205105 is a deficient number, since it is larger than the sum of its proper divisors (11219087).

30205105 is an equidigital number, since it uses as much as digits as its factorization.

30205105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863015.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 30205105 is about 5495.9171209180. The cubic root of 30205105 is about 311.4297639543.

Adding to 30205105 its reverse (50150203), we get a palindrome (80355308).

The spelling of 30205105 in words is "thirty million, two hundred five thousand, one hundred five".