287396 has 6 divisors (see below), whose sum is σ = 502950. Its totient is φ = 143696.

The previous prime is 287393. The next prime is 287437. The reversal of 287396 is 693782.

It can be written as a sum of positive squares in only one way, i.e., 287296 + 100 = 536^2 + 10^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 287396.

It is not an unprimeable number, because it can be changed into a prime (287393) 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 as a sum of consecutive naturals, namely, 35921 + ... + 35928.

It is an arithmetic number, because the mean of its divisors is an integer number (83825).

2²⁸⁷³⁹⁶ is an apocalyptic number.

It is an amenable number.

287396 is a deficient number, since it is larger than the sum of its proper divisors (215554).

287396 is a wasteful number, since it uses less digits than its factorization.

287396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71853 (or 71851 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 287396 is about 536.0932754661. The cubic root of 287396 is about 65.9923468322.

The spelling of 287396 in words is "two hundred eighty-seven thousand, three hundred ninety-six".