268729878 has 16 divisors (see below), whose sum is σ = 538928640. Its totient is φ = 89331816.

The previous prime is 268729849. The next prime is 268729883. The reversal of 268729878 is 878927862.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58818 + ... + 63221.

It is an arithmetic number, because the mean of its divisors is an integer number (33683040).

Almost surely, 2^268729878 is an apocalyptic number.

268729878 is an abundant number, since it is smaller than the sum of its proper divisors (270198762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

268729878 is a wasteful number, since it uses less digits than its factorization.

268729878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122411.

The product of its digits is 5419008, while the sum is 57.

The square root of 268729878 is about 16392.9825840205. The cubic root of 268729878 is about 645.3153340631.

The spelling of 268729878 in words is "two hundred sixty-eight million, seven hundred twenty-nine thousand, eight hundred seventy-eight".