286822 has 8 divisors (see below), whose sum is σ = 437472. Its totient is φ = 141000.

The previous prime is 286813. The next prime is 286831. The reversal of 286822 is 228682.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (286813) and next prime (286831).

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 2⁵ + 8² + 8⁶ + 6 + 2¹³ + 2¹⁴ .

It is a congruent number.

It is an unprimeable number.

286822 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 in 3 ways as a sum of consecutive naturals, for example, 1054 + ... + 1297.

It is an arithmetic number, because the mean of its divisors is an integer number (54684).

2²⁸⁶⁸²² is an apocalyptic number.

286822 is a deficient number, since it is larger than the sum of its proper divisors (150650).

286822 is a wasteful number, since it uses less digits than its factorization.

286822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2414.

The product of its digits is 3072, while the sum is 28.

The square root of 286822 is about 535.5576532923. The cubic root of 286822 is about 65.9483832728.

The spelling of 286822 in words is "two hundred eighty-six thousand, eight hundred twenty-two".