30180205 has 24 divisors (see below), whose sum is σ = 40895712. Its totient is φ = 21204000.

The previous prime is 30180193. The next prime is 30180221. The reversal of 30180205 is 50208103.

It is a happy number.

It is not a de Polignac number, because 30180205 - 2⁷ = 30180077 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 52570 + ... + 53140.

It is an arithmetic number, because the mean of its divisors is an integer number (1703988).

Almost surely, 2^30180205 is an apocalyptic number.

It is an amenable number.

30180205 is a deficient number, since it is larger than the sum of its proper divisors (10715507).

30180205 is a wasteful number, since it uses less digits than its factorization.

30180205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649 (or 618 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 30180205 is about 5493.6513358603. The cubic root of 30180205 is about 311.3441632700.

Adding to 30180205 its reverse (50208103), we get a palindrome (80388308).

The spelling of 30180205 in words is "thirty million, one hundred eighty thousand, two hundred five".