287432 has 32 divisors (see below), whose sum is σ = 595200. Its totient is φ = 129600.

The previous prime is 287393. The next prime is 287437. The reversal of 287432 is 234782.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 287432.

It is not an unprimeable number, because it can be changed into a prime (287437) 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 7 ways as a sum of consecutive naturals, for example, 4682 + ... + 4742.

It is an arithmetic number, because the mean of its divisors is an integer number (18600).

2²⁸⁷⁴³² is an apocalyptic number.

It is an amenable number.

287432 is an abundant number, since it is smaller than the sum of its proper divisors (307768).

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

287432 is a wasteful number, since it uses less digits than its factorization.

287432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 113 counting only the distinct ones).

The product of its digits is 2688, while the sum is 26.

The square root of 287432 is about 536.1268506613. The cubic root of 287432 is about 65.9951021771.

Subtracting from 287432 its reverse (234782), we obtain a triangular number (52650 = T₃₂₄).

The spelling of 287432 in words is "two hundred eighty-seven thousand, four hundred thirty-two".