268928239 has 4 divisors (see below), whose sum is σ = 269001280. Its totient is φ = 268855200.

The previous prime is 268928237. The next prime is 268928243. The reversal of 268928239 is 932829862.

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

It is a cyclic number.

It is not a de Polignac number, because 268928239 - 2¹ = 268928237 is a prime.

It is a super-2 number, since 2×268928239² = 144644795463282242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 268928192 and 268928201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268928237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30687 + ... + 38464.

It is an arithmetic number, because the mean of its divisors is an integer number (67250320).

Almost surely, 2^268928239 is an apocalyptic number.

268928239 is a deficient number, since it is larger than the sum of its proper divisors (73041).

268928239 is an equidigital number, since it uses as much as digits as its factorization.

268928239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73040.

The product of its digits is 746496, while the sum is 49.

The square root of 268928239 is about 16399.0316482407. The cubic root of 268928239 is about 645.4740732816.

The spelling of 268928239 in words is "two hundred sixty-eight million, nine hundred twenty-eight thousand, two hundred thirty-nine".