28300513 has 2 divisors, whose sum is σ = 28300514. Its totient is φ = 28300512.

The previous prime is 28300483. The next prime is 28300541. The reversal of 28300513 is 31500382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16418704 + 11881809 = 4052^2 + 3447^2 .

It is a cyclic number.

It is not a de Polignac number, because 28300513 - 2⁹ = 28300001 is a prime.

It is not a weakly prime, because it can be changed into another prime (28300543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14150256 + 14150257.

It is an arithmetic number, because the mean of its divisors is an integer number (14150257).

Almost surely, 2^28300513 is an apocalyptic number.

It is an amenable number.

28300513 is a deficient number, since it is larger than the sum of its proper divisors (1).

28300513 is an equidigital number, since it uses as much as digits as its factorization.

28300513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 28300513 is about 5319.8226474197. The cubic root of 28300513 is about 304.7413842881.

Adding to 28300513 its reverse (31500382), we get a palindrome (59800895).

The spelling of 28300513 in words is "twenty-eight million, three hundred thousand, five hundred thirteen".