90284 has 6 divisors (see below), whose sum is σ = 158004. Its totient is φ = 45140.

The previous prime is 90281. The next prime is 90289. The reversal of 90284 is 48209.

It is not an unprimeable number, because it can be changed into a prime (90281) 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, 11282 + ... + 11289.

It is an arithmetic number, because the mean of its divisors is an integer number (26334).

2⁹⁰²⁸⁴ is an apocalyptic number.

It is an amenable number.

90284 is a deficient number, since it is larger than the sum of its proper divisors (67720).

90284 is a wasteful number, since it uses less digits than its factorization.

90284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22575 (or 22573 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 90284 is about 300.4729605139. The cubic root of 90284 is about 44.8611357092.

The spelling of 90284 in words is "ninety thousand, two hundred eighty-four".