28750201 has 2 divisors, whose sum is σ = 28750202. Its totient is φ = 28750200.

The previous prime is 28750199. The next prime is 28750217. The reversal of 28750201 is 10205782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23232400 + 5517801 = 4820^2 + 2349^2 .

It is a cyclic number.

It is not a de Polignac number, because 28750201 - 2¹ = 28750199 is a prime.

Together with 28750199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28750261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14375100 + 14375101.

It is an arithmetic number, because the mean of its divisors is an integer number (14375101).

Almost surely, 2^28750201 is an apocalyptic number.

It is an amenable number.

28750201 is a deficient number, since it is larger than the sum of its proper divisors (1).

28750201 is an equidigital number, since it uses as much as digits as its factorization.

28750201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 28750201 is about 5361.9213906957. The cubic root of 28750201 is about 306.3469976798.

Adding to 28750201 its reverse (10205782), we get a palindrome (38955983).

The spelling of 28750201 in words is "twenty-eight million, seven hundred fifty thousand, two hundred one".