268738 has 4 divisors (see below), whose sum is σ = 403110. Its totient is φ = 134368.

The previous prime is 268733. The next prime is 268747. The reversal of 268738 is 837862.

It is a happy number.

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., 227529 + 41209 = 477^2 + 203^2 .

It is a super-2 number, since 2×268738² = 144440225288, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹⁸ + 6 + 7⁴ + 8² + 3³ + 8⁴ .

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (268733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67183 + ... + 67186.

2²⁶⁸⁷³⁸ is an apocalyptic number.

268738 is a deficient number, since it is larger than the sum of its proper divisors (134372).

268738 is a wasteful number, since it uses less digits than its factorization.

268738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134371.

The product of its digits is 16128, while the sum is 34.

The square root of 268738 is about 518.3994598763. The cubic root of 268738 is about 64.5321835261.

The spelling of 268738 in words is "two hundred sixty-eight thousand, seven hundred thirty-eight".