268402885 has 16 divisors (see below), whose sum is σ = 342543600. Its totient is φ = 201194496.

The previous prime is 268402831. The next prime is 268402889. The reversal of 268402885 is 588204862.

It can be written as a sum of positive squares in 8 ways, for example, as 96845281 + 171557604 = 9841^2 + 13098^2 .

It is a cyclic number.

It is not a de Polignac number, because 268402885 - 2¹⁷ = 268271813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268402889) 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 in 15 ways as a sum of consecutive naturals, for example, 12571 + ... + 26359.

It is an arithmetic number, because the mean of its divisors is an integer number (21408975).

Almost surely, 2^268402885 is an apocalyptic number.

It is an amenable number.

268402885 is a deficient number, since it is larger than the sum of its proper divisors (74140715).

268402885 is a wasteful number, since it uses less digits than its factorization.

268402885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14040.

The product of its (nonzero) digits is 245760, while the sum is 43.

The square root of 268402885 is about 16383.0059818093. The cubic root of 268402885 is about 645.0534859398.

The spelling of 268402885 in words is "two hundred sixty-eight million, four hundred two thousand, eight hundred eighty-five".