28869593 has 2 divisors, whose sum is σ = 28869594. Its totient is φ = 28869592.

The previous prime is 28869559. The next prime is 28869601. The reversal of 28869593 is 39596882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25938649 + 2930944 = 5093^2 + 1712^2 .

It is a cyclic number.

It is not a de Polignac number, because 28869593 - 2²² = 24675289 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28869293) 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, 14434796 + 14434797.

It is an arithmetic number, because the mean of its divisors is an integer number (14434797).

Almost surely, 2^28869593 is an apocalyptic number.

It is an amenable number.

28869593 is a deficient number, since it is larger than the sum of its proper divisors (1).

28869593 is an equidigital number, since it uses as much as digits as its factorization.

28869593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 50.

The square root of 28869593 is about 5373.0431786838. The cubic root of 28869593 is about 306.7704714488.

The spelling of 28869593 in words is "twenty-eight million, eight hundred sixty-nine thousand, five hundred ninety-three".