28608241 has 2 divisors, whose sum is σ = 28608242. Its totient is φ = 28608240.

The previous prime is 28608233. The next prime is 28608247. The reversal of 28608241 is 14280682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26061025 + 2547216 = 5105^2 + 1596^2 .

It is a cyclic number.

It is not a de Polignac number, because 28608241 - 2³ = 28608233 is a prime.

It is a super-2 number, since 2×28608241² = 1636862906228162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28608247) 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 as a sum of consecutive naturals, namely, 14304120 + 14304121.

It is an arithmetic number, because the mean of its divisors is an integer number (14304121).

Almost surely, 2^28608241 is an apocalyptic number.

It is an amenable number.

28608241 is a deficient number, since it is larger than the sum of its proper divisors (1).

28608241 is an equidigital number, since it uses as much as digits as its factorization.

28608241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 28608241 is about 5348.6672171673. The cubic root of 28608241 is about 305.8419485100.

The spelling of 28608241 in words is "twenty-eight million, six hundred eight thousand, two hundred forty-one".