287349 has 4 divisors (see below), whose sum is σ = 383136. Its totient is φ = 191564.

The previous prime is 287347. The next prime is 287383. The reversal of 287349 is 943782.

287349 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 287349 - 2¹ = 287347 is a prime.

It is a D-number.

287349 is strictly pandigital in base 7.

It is a Curzon number.

287349 is a lucky number.

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 287349.

It is not an unprimeable number, because it can be changed into a prime (287341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47889 + ... + 47894.

It is an arithmetic number, because the mean of its divisors is an integer number (95784).

2²⁸⁷³⁴⁹ is an apocalyptic number.

It is an amenable number.

287349 is a deficient number, since it is larger than the sum of its proper divisors (95787).

287349 is an equidigital number, since it uses as much as digits as its factorization.

287349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95786.

The product of its digits is 12096, while the sum is 33.

The square root of 287349 is about 536.0494380185. The cubic root of 287349 is about 65.9887492301.

It can be divided in two parts, 287 and 349, that added together give a palindrome (636).

The spelling of 287349 in words is "two hundred eighty-seven thousand, three hundred forty-nine".