268781756 has 12 divisors (see below), whose sum is σ = 477388968. Its totient is φ = 132384912.

The previous prime is 268781741. The next prime is 268781759. The reversal of 268781756 is 657187862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268781759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501191 + ... + 501726.

It is an arithmetic number, because the mean of its divisors is an integer number (39782414).

Almost surely, 2^268781756 is an apocalyptic number.

It is an amenable number.

268781756 is a deficient number, since it is larger than the sum of its proper divisors (208607212).

268781756 is a wasteful number, since it uses less digits than its factorization.

268781756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002988 (or 1002986 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 50.

The square root of 268781756 is about 16394.5648310652. The cubic root of 268781756 is about 645.3568571905.

The spelling of 268781756 in words is "two hundred sixty-eight million, seven hundred eighty-one thousand, seven hundred fifty-six".