268306 has 4 divisors (see below), whose sum is σ = 402462. Its totient is φ = 134152.

The previous prime is 268297. The next prime is 268343. The reversal of 268306 is 603862.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 241081 + 27225 = 491^2 + 165^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67075 + ... + 67078.

2²⁶⁸³⁰⁶ is an apocalyptic number.

268306 is a deficient number, since it is larger than the sum of its proper divisors (134156).

268306 is a wasteful number, since it uses less digits than its factorization.

268306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134155.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 268306 is about 517.9826251912. The cubic root of 268306 is about 64.4975861925.

The spelling of 268306 in words is "two hundred sixty-eight thousand, three hundred six".