28090301 has 2 divisors, whose sum is σ = 28090302. Its totient is φ = 28090300.

The previous prime is 28090277. The next prime is 28090319. The reversal of 28090301 is 10309082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15202201 + 12888100 = 3899^2 + 3590^2 .

It is a cyclic number.

It is not a de Polignac number, because 28090301 - 2¹⁴ = 28073917 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28090351) 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 as a sum of consecutive naturals, namely, 14045150 + 14045151.

It is an arithmetic number, because the mean of its divisors is an integer number (14045151).

Almost surely, 2^28090301 is an apocalyptic number.

It is an amenable number.

28090301 is a deficient number, since it is larger than the sum of its proper divisors (1).

28090301 is an equidigital number, since it uses as much as digits as its factorization.

28090301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 28090301 is about 5300.0283961503. The cubic root of 28090301 is about 303.9849838208.

Adding to 28090301 its reverse (10309082), we get a palindrome (38399383).

The spelling of 28090301 in words is "twenty-eight million, ninety thousand, three hundred one".