7287 has 8 divisors (see below), whose sum is σ = 11136. Its totient is φ = 4152.

The previous prime is 7283. The next prime is 7297. The reversal of 7287 is 7827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7287 - 2² = 7283 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7283) 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, 153 + ... + 194.

It is an arithmetic number, because the mean of its divisors is an integer number (1392).

2⁷²⁸⁷ is an apocalyptic number.

7287 is a deficient number, since it is larger than the sum of its proper divisors (3849).

7287 is a wasteful number, since it uses less digits than its factorization.

7287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357.

The product of its digits is 784, while the sum is 24.

The square root of 7287 is about 85.3639268075. The cubic root of 7287 is about 19.3872520494.

The spelling of 7287 in words is "seven thousand, two hundred eighty-seven".