286730 has 16 divisors (see below), whose sum is σ = 526824. Its totient is φ = 112320.

The previous prime is 286721. The next prime is 286733. The reversal of 286730 is 37682.

It can be written as a sum of positive squares in 4 ways, for example, as 243049 + 43681 = 493^2 + 209^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 286730.

It is not an unprimeable number, because it can be changed into a prime (286733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260 + ... + 800.

2²⁸⁶⁷³⁰ is an apocalyptic number.

286730 is a deficient number, since it is larger than the sum of its proper divisors (240094).

286730 is a wasteful number, since it uses less digits than its factorization.

286730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 286730 is about 535.4717546239. The cubic root of 286730 is about 65.9413313962.

The spelling of 286730 in words is "two hundred eighty-six thousand, seven hundred thirty".