268490 has 8 divisors (see below), whose sum is σ = 483300. Its totient is φ = 107392.

The previous prime is 268487. The next prime is 268493. The reversal of 268490 is 94862.

268490 is nontrivially palindromic in base 15.

It is an interprime number because it is at equal distance from previous prime (268487) and next prime (268493).

It can be written as a sum of positive squares in 2 ways, for example, as 259081 + 9409 = 509^2 + 97^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268493) 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 in 3 ways as a sum of consecutive naturals, for example, 13415 + ... + 13434.

2²⁶⁸⁴⁹⁰ is an apocalyptic number.

268490 is a deficient number, since it is larger than the sum of its proper divisors (214810).

268490 is a wasteful number, since it uses less digits than its factorization.

268490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26856.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 268490 is about 518.1602068859. The cubic root of 268490 is about 64.5123266307.

The spelling of 268490 in words is "two hundred sixty-eight thousand, four hundred ninety".