268800005 has 16 divisors (see below), whose sum is σ = 350768880. Its totient is φ = 196918272.

The previous prime is 268799989. The next prime is 268800031. The reversal of 268800005 is 500008862.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 78304801 + 190495204 = 8849^2 + 13802^2 .

It is a cyclic number.

It is not a de Polignac number, because 268800005 - 2⁴ = 268799989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39590 + ... + 45879.

It is an arithmetic number, because the mean of its divisors is an integer number (21923055).

Almost surely, 2^268800005 is an apocalyptic number.

It is an amenable number.

268800005 is a deficient number, since it is larger than the sum of its proper divisors (81968875).

268800005 is a wasteful number, since it uses less digits than its factorization.

268800005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85528.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 268800005 is about 16395.1213780197. The cubic root of 268800005 is about 645.3714624114.

Adding to 268800005 its reverse (500008862), we get a palindrome (768808867).

The spelling of 268800005 in words is "two hundred sixty-eight million, eight hundred thousand, five".