268506836 has 12 divisors (see below), whose sum is σ = 506032212. Its totient is φ = 123926208.

The previous prime is 268506809. The next prime is 268506839. The reversal of 268506836 is 638605862.

It can be written as a sum of positive squares in 2 ways, for example, as 91776400 + 176730436 = 9580^2 + 13294^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268506839) 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, 2581745 + ... + 2581848.

It is an arithmetic number, because the mean of its divisors is an integer number (42169351).

Almost surely, 2^268506836 is an apocalyptic number.

268506836 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

268506836 is a deficient number, since it is larger than the sum of its proper divisors (237525376).

268506836 is a wasteful number, since it uses less digits than its factorization.

268506836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5163610 (or 5163608 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 268506836 is about 16386.1781999342. The cubic root of 268506836 is about 645.1367504450.

The spelling of 268506836 in words is "two hundred sixty-eight million, five hundred six thousand, eight hundred thirty-six".