287433 has 12 divisors (see below), whose sum is σ = 420420. Its totient is φ = 189216.

The previous prime is 287393. The next prime is 287437. The reversal of 287433 is 334782.

It can be written as a sum of positive squares in 2 ways, for example, as 242064 + 45369 = 492^2 + 213^2 .

It is not a de Polignac number, because 287433 - 2¹⁷ = 156361 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 287397 and 287406.

It is not an unprimeable number, because it can be changed into a prime (287437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 835 + ... + 1127.

It is an arithmetic number, because the mean of its divisors is an integer number (35035).

2²⁸⁷⁴³³ is an apocalyptic number.

It is an amenable number.

287433 is a deficient number, since it is larger than the sum of its proper divisors (132987).

287433 is a wasteful number, since it uses less digits than its factorization.

287433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 405 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 287433 is about 536.1277832756. The cubic root of 287433 is about 65.9951787112.

The spelling of 287433 in words is "two hundred eighty-seven thousand, four hundred thirty-three".