28201 has 2 divisors, whose sum is σ = 28202. Its totient is φ = 28200.

The previous prime is 28183. The next prime is 28211. The reversal of 28201 is 10282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25600 + 2601 = 160^2 + 51^2 .

It is a cyclic number.

It is not a de Polignac number, because 28201 - 2⁹ = 27689 is a prime.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (28211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14100 + 14101.

It is an arithmetic number, because the mean of its divisors is an integer number (14101).

2²⁸²⁰¹ is an apocalyptic number.

It is an amenable number.

28201 is a deficient number, since it is larger than the sum of its proper divisors (1).

28201 is an equidigital number, since it uses as much as digits as its factorization.

28201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 28201 is about 167.9315336677. The cubic root of 28201 is about 30.4383777770.

Adding to 28201 its reverse (10282), we get a palindrome (38483).

The spelling of 28201 in words is "twenty-eight thousand, two hundred one".