287336 has 24 divisors (see below), whose sum is σ = 627570. Its totient is φ = 122976.

The previous prime is 287333. The next prime is 287341. The reversal of 287336 is 633782.

It can be written as a sum of positive squares in only one way, i.e., 164836 + 122500 = 406^2 + 350^2 .

It is a junction number, because it is equal to n+sod(n) for n = 287299 and 287308.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 287336.

It is not an unprimeable number, because it can be changed into a prime (287333) 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 5 ways as a sum of consecutive naturals, for example, 26 + ... + 758.

2²⁸⁷³³⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 287336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313785).

287336 is an abundant number, since it is smaller than the sum of its proper divisors (340234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

287336 is a wasteful number, since it uses less digits than its factorization.

287336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753 (or 742 counting only the distinct ones).

The product of its digits is 6048, while the sum is 29.

The square root of 287336 is about 536.0373121341. The cubic root of 287336 is about 65.9877540794.

The spelling of 287336 in words is "two hundred eighty-seven thousand, three hundred thirty-six".