90287 has 8 divisors (see below), whose sum is σ = 98496. Its totient is φ = 82432.

The previous prime is 90281. The next prime is 90289. The reversal of 90287 is 78209.

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

It is a cyclic number.

It is not a de Polignac number, because 90287 - 2⁴ = 90271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 90287.

It is not an unprimeable number, because it can be changed into a prime (90281) 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, 743 + ... + 855.

It is an arithmetic number, because the mean of its divisors is an integer number (12312).

2⁹⁰²⁸⁷ is an apocalyptic number.

90287 is a deficient number, since it is larger than the sum of its proper divisors (8209).

90287 is a wasteful number, since it uses less digits than its factorization.

90287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 90287 is about 300.4779526022. The cubic root of 90287 is about 44.8616325928.

It can be divided in two parts, 902 and 87, that added together give a palindrome (989).

The spelling of 90287 in words is "ninety thousand, two hundred eighty-seven".