30280205 has 24 divisors (see below), whose sum is σ = 39717600. Its totient is φ = 22099392.

The previous prime is 30280193. The next prime is 30280207. The reversal of 30280205 is 50208203.

It is not a de Polignac number, because 30280205 - 2⁴ = 30280189 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30280207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79706 + ... + 80084.

It is an arithmetic number, because the mean of its divisors is an integer number (1654900).

Almost surely, 2^30280205 is an apocalyptic number.

It is an amenable number.

30280205 is a deficient number, since it is larger than the sum of its proper divisors (9437395).

30280205 is a wasteful number, since it uses less digits than its factorization.

30280205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 30280205 is about 5502.7452239768. The cubic root of 30280205 is about 311.6876565437.

Adding to 30280205 its reverse (50208203), we get a palindrome (80488408).

The spelling of 30280205 in words is "thirty million, two hundred eighty thousand, two hundred five".