340287 has 8 divisors (see below), whose sum is σ = 468480. Its totient is φ = 219480.

The previous prime is 340283. The next prime is 340297. The reversal of 340287 is 782043.

340287 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 340287 - 2² = 340283 is a prime.

340287 is strictly pandigital in base 7.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 340287.

It is not an unprimeable number, because it can be changed into a prime (340283) 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 7 ways as a sum of consecutive naturals, for example, 1737 + ... + 1922.

It is an arithmetic number, because the mean of its divisors is an integer number (58560).

2³⁴⁰²⁸⁷ is an apocalyptic number.

340287 is a deficient number, since it is larger than the sum of its proper divisors (128193).

340287 is a wasteful number, since it uses less digits than its factorization.

340287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3693.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 340287 is about 583.3412380417. The cubic root of 340287 is about 69.8149534332.

The spelling of 340287 in words is "three hundred forty thousand, two hundred eighty-seven".