268390 has 8 divisors (see below), whose sum is σ = 483120. Its totient is φ = 107352.

The previous prime is 268343. The next prime is 268403. The reversal of 268390 is 93862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 13410 + ... + 13429.

It is an arithmetic number, because the mean of its divisors is an integer number (60390).

2²⁶⁸³⁹⁰ is an apocalyptic number.

268390 is a deficient number, since it is larger than the sum of its proper divisors (214730).

268390 is a wasteful number, since it uses less digits than its factorization.

268390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26846.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 268390 is about 518.0637026467. The cubic root of 268390 is about 64.5043163588.

The spelling of 268390 in words is "two hundred sixty-eight thousand, three hundred ninety".