268239 has 4 divisors (see below), whose sum is σ = 357656. Its totient is φ = 178824.

The previous prime is 268237. The next prime is 268253. The reversal of 268239 is 932862.

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

It is not a de Polignac number, because 268239 - 2¹ = 268237 is a prime.

It is a super-2 number, since 2×268239² = 143904322242, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44704 + ... + 44709.

It is an arithmetic number, because the mean of its divisors is an integer number (89414).

2²⁶⁸²³⁹ is an apocalyptic number.

268239 is a deficient number, since it is larger than the sum of its proper divisors (89417).

268239 is an equidigital number, since it uses as much as digits as its factorization.

268239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89416.

The product of its digits is 5184, while the sum is 30.

The square root of 268239 is about 517.9179471692. The cubic root of 268239 is about 64.4922170767.

The spelling of 268239 in words is "two hundred sixty-eight thousand, two hundred thirty-nine".