286749 has 12 divisors (see below), whose sum is σ = 418912. Its totient is φ = 189000.

The previous prime is 286733. The next prime is 286751. The reversal of 286749 is 947682.

It is not a de Polignac number, because 286749 - 2⁴ = 286733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286789) 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 11 ways as a sum of consecutive naturals, for example, 1254 + ... + 1464.

2²⁸⁶⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

286749 is a deficient number, since it is larger than the sum of its proper divisors (132163).

286749 is a wasteful number, since it uses less digits than its factorization.

286749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368 (or 365 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 286749 is about 535.4894956953. The cubic root of 286749 is about 65.9427878856.

It can be divided in two parts, 2867 and 49, that added together give a square (2916 = 54²).

The spelling of 286749 in words is "two hundred eighty-six thousand, seven hundred forty-nine".