28262249 has 2 divisors, whose sum is σ = 28262250. Its totient is φ = 28262248.

The previous prime is 28262237. The next prime is 28262261. The reversal of 28262249 is 94226282.

It is a balanced prime because it is at equal distance from previous prime (28262237) and next prime (28262261).

It can be written as a sum of positive squares in only one way, i.e., 25321024 + 2941225 = 5032^2 + 1715^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28262249 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (28262209) 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, 14131124 + 14131125.

It is an arithmetic number, because the mean of its divisors is an integer number (14131125).

Almost surely, 2^28262249 is an apocalyptic number.

It is an amenable number.

28262249 is a deficient number, since it is larger than the sum of its proper divisors (1).

28262249 is an equidigital number, since it uses as much as digits as its factorization.

28262249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 35.

The square root of 28262249 is about 5316.2250704800. The cubic root of 28262249 is about 304.6039794341.

The spelling of 28262249 in words is "twenty-eight million, two hundred sixty-two thousand, two hundred forty-nine".