30538205 has 16 divisors (see below), whose sum is σ = 38937024. Its totient is φ = 22913280.

The previous prime is 30538201. The next prime is 30538217. The reversal of 30538205 is 50283503.

It is not a de Polignac number, because 30538205 - 2² = 30538201 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30538201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37250 + ... + 38060.

It is an arithmetic number, because the mean of its divisors is an integer number (2433564).

Almost surely, 2^30538205 is an apocalyptic number.

It is an amenable number.

30538205 is a deficient number, since it is larger than the sum of its proper divisors (8398819).

30538205 is a wasteful number, since it uses less digits than its factorization.

30538205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 30538205 is about 5526.1383442690. The cubic root of 30538205 is about 312.5703905434.

The spelling of 30538205 in words is "thirty million, five hundred thirty-eight thousand, two hundred five".