28836229 has 2 divisors, whose sum is σ = 28836230. Its totient is φ = 28836228.

The previous prime is 28836193. The next prime is 28836253. The reversal of 28836229 is 92263882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15984004 + 12852225 = 3998^2 + 3585^2 .

It is a cyclic number.

It is not a de Polignac number, because 28836229 - 2⁹ = 28835717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28836191 and 28836200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28836289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14418114 + 14418115.

It is an arithmetic number, because the mean of its divisors is an integer number (14418115).

Almost surely, 2^28836229 is an apocalyptic number.

It is an amenable number.

28836229 is a deficient number, since it is larger than the sum of its proper divisors (1).

28836229 is an equidigital number, since it uses as much as digits as its factorization.

28836229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 40.

The square root of 28836229 is about 5369.9375229140. The cubic root of 28836229 is about 306.6522497686.

The spelling of 28836229 in words is "twenty-eight million, eight hundred thirty-six thousand, two hundred twenty-nine".