28300093 has 2 divisors, whose sum is σ = 28300094. Its totient is φ = 28300092.

The previous prime is 28300043. The next prime is 28300123. The reversal of 28300093 is 39000382.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26656569 + 1643524 = 5163^2 + 1282^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28300093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28300003) 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, 14150046 + 14150047.

It is an arithmetic number, because the mean of its divisors is an integer number (14150047).

Almost surely, 2^28300093 is an apocalyptic number.

It is an amenable number.

28300093 is a deficient number, since it is larger than the sum of its proper divisors (1).

28300093 is an equidigital number, since it uses as much as digits as its factorization.

28300093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 28300093 is about 5319.7831722731. The cubic root of 28300093 is about 304.7398767534.

The spelling of 28300093 in words is "twenty-eight million, three hundred thousand, ninety-three".