28634205 has 16 divisors (see below), whose sum is σ = 48510144. Its totient is φ = 14373120.

The previous prime is 28634201. The next prime is 28634213. The reversal of 28634205 is 50243682.

It is not a de Polignac number, because 28634205 - 2² = 28634201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28634201) 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, 55891 + ... + 56400.

It is an arithmetic number, because the mean of its divisors is an integer number (3031884).

Almost surely, 2^28634205 is an apocalyptic number.

It is an amenable number.

28634205 is a deficient number, since it is larger than the sum of its proper divisors (19875939).

28634205 is a wasteful number, since it uses less digits than its factorization.

28634205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112316.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 28634205 is about 5351.0938134180. The cubic root of 28634205 is about 305.9344449258.

Adding to 28634205 its reverse (50243682), we get a palindrome (78877887).

The spelling of 28634205 in words is "twenty-eight million, six hundred thirty-four thousand, two hundred five".