285982 has 8 divisors (see below), whose sum is σ = 447696. Its totient is φ = 136752.

The previous prime is 285979. The next prime is 285983. The reversal of 285982 is 289582.

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

It is a d-powerful number, because it can be written as 2² + 8 + 9 + 5⁶ + 8⁶ + 2¹³ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3063 + ... + 3154.

It is an arithmetic number, because the mean of its divisors is an integer number (55962).

2²⁸⁵⁹⁸² is an apocalyptic number.

285982 is a deficient number, since it is larger than the sum of its proper divisors (161714).

285982 is a wasteful number, since it uses less digits than its factorization.

285982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6242.

The product of its digits is 11520, while the sum is 34.

The square root of 285982 is about 534.7728489742. The cubic root of 285982 is about 65.8839405067.

Subtracting 285982 from its reverse (289582), we obtain a square (3600 = 60²).

The spelling of 285982 in words is "two hundred eighty-five thousand, nine hundred eighty-two".