286442 has 16 divisors (see below), whose sum is σ = 483840. Its totient is φ = 126192.

The previous prime is 286427. The next prime is 286453. The reversal of 286442 is 244682.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a d-powerful number, because it can be written as 2 + 8 + 4⁷ + 6⁵ + 4⁹ + 2⁷ .

It is a zygodrome in base 12.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359 + ... + 837.

It is an arithmetic number, because the mean of its divisors is an integer number (30240).

2²⁸⁶⁴⁴² is an apocalyptic number.

286442 is a deficient number, since it is larger than the sum of its proper divisors (197398).

286442 is a wasteful number, since it uses less digits than its factorization.

286442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517.

The product of its digits is 3072, while the sum is 26.

The square root of 286442 is about 535.2027653142. The cubic root of 286442 is about 65.9192461994.

The spelling of 286442 in words is "two hundred eighty-six thousand, four hundred forty-two".