285268729 has 2 divisors, whose sum is σ = 285268730. Its totient is φ = 285268728.

The previous prime is 285268723. The next prime is 285268769. The reversal of 285268729 is 927862582.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 284833129 + 435600 = 16877^2 + 660^2 .

It is a cyclic number.

It is not a de Polignac number, because 285268729 - 2⁷ = 285268601 is a prime.

It is not a weakly prime, because it can be changed into another prime (285268723) 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, 142634364 + 142634365.

It is an arithmetic number, because the mean of its divisors is an integer number (142634365).

Almost surely, 2^285268729 is an apocalyptic number.

It is an amenable number.

285268729 is a deficient number, since it is larger than the sum of its proper divisors (1).

285268729 is an equidigital number, since it uses as much as digits as its factorization.

285268729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 49.

The square root of 285268729 is about 16889.9002069284. The cubic root of 285268729 is about 658.2912094111.

The spelling of 285268729 in words is "two hundred eighty-five million, two hundred sixty-eight thousand, seven hundred twenty-nine".