287230 has 8 divisors (see below), whose sum is σ = 517032. Its totient is φ = 114888.

The previous prime is 287219. The next prime is 287233. The reversal of 287230 is 32782.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287233) by changing a digit.

287230 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 14352 + ... + 14371.

It is an arithmetic number, because the mean of its divisors is an integer number (64629).

2²⁸⁷²³⁰ is an apocalyptic number.

287230 is a deficient number, since it is larger than the sum of its proper divisors (229802).

287230 is a wasteful number, since it uses less digits than its factorization.

287230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28730.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 287230 is about 535.9384292995. The cubic root of 287230 is about 65.9796386533.

The spelling of 287230 in words is "two hundred eighty-seven thousand, two hundred thirty".