28200211 has 8 divisors (see below), whose sum is σ = 30547440. Its totient is φ = 25878432.

The previous prime is 28200203. The next prime is 28200241. The reversal of 28200211 is 11200282.

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

It is a cyclic number.

It is not a de Polignac number, because 28200211 - 2³ = 28200203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28200241) 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, 4021 + ... + 8518.

It is an arithmetic number, because the mean of its divisors is an integer number (3818430).

Almost surely, 2^28200211 is an apocalyptic number.

28200211 is a deficient number, since it is larger than the sum of its proper divisors (2347229).

28200211 is a wasteful number, since it uses less digits than its factorization.

28200211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12725.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 28200211 is about 5310.3870857029. The cubic root of 28200211 is about 304.3809390878.

Adding to 28200211 its reverse (11200282), we get a palindrome (39400493).

The spelling of 28200211 in words is "twenty-eight million, two hundred thousand, two hundred eleven".