287158 has 8 divisors (see below), whose sum is σ = 445680. Its totient is φ = 138600.

The previous prime is 287149. The next prime is 287159. The reversal of 287158 is 851782.

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 (287159) 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, 2418 + ... + 2533.

It is an arithmetic number, because the mean of its divisors is an integer number (55710).

2²⁸⁷¹⁵⁸ is an apocalyptic number.

287158 is a deficient number, since it is larger than the sum of its proper divisors (158522).

287158 is a wasteful number, since it uses less digits than its factorization.

287158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4982.

The product of its digits is 4480, while the sum is 31.

The square root of 287158 is about 535.8712531943. The cubic root of 287158 is about 65.9741251496.

The spelling of 287158 in words is "two hundred eighty-seven thousand, one hundred fifty-eight".