268128718 has 32 divisors (see below), whose sum is σ = 473487840. Its totient is φ = 112268160.

The previous prime is 268128713. The next prime is 268128739. The reversal of 268128718 is 817821862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268128713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250288 + ... + 251356.

It is an arithmetic number, because the mean of its divisors is an integer number (14796495).

Almost surely, 2^268128718 is an apocalyptic number.

268128718 is a deficient number, since it is larger than the sum of its proper divisors (205359122).

268128718 is a wasteful number, since it uses less digits than its factorization.

268128718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972.

The product of its digits is 86016, while the sum is 43.

The square root of 268128718 is about 16374.6364234446. The cubic root of 268128718 is about 644.8337756461.

The spelling of 268128718 in words is "two hundred sixty-eight million, one hundred twenty-eight thousand, seven hundred eighteen".