287164 has 24 divisors (see below), whose sum is σ = 550368. Its totient is φ = 130560.

The previous prime is 287159. The next prime is 287167. The reversal of 287164 is 461782.

287164 = T₁₇ + T₁₈ + ... + T₁₁₉.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2737 + ... + 2839.

It is an arithmetic number, because the mean of its divisors is an integer number (22932).

2²⁸⁷¹⁶⁴ is an apocalyptic number.

It is an amenable number.

287164 is a deficient number, since it is larger than the sum of its proper divisors (263204).

287164 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 9 representation: 287164 = (476821)₉.

287164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165 (or 163 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 287164 is about 535.8768515247. The cubic root of 287164 is about 65.9745846434.

The spelling of 287164 in words is "two hundred eighty-seven thousand, one hundred sixty-four".