286936 has 32 divisors (see below), whose sum is σ = 604800. Its totient is φ = 126720.

The previous prime is 286927. The next prime is 286973. The reversal of 286936 is 639682.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

286936 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 7 ways as a sum of consecutive naturals, for example, 3180 + ... + 3268.

It is an arithmetic number, because the mean of its divisors is an integer number (18900).

2²⁸⁶⁹³⁶ is an apocalyptic number.

286936 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 286936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302400).

286936 is an abundant number, since it is smaller than the sum of its proper divisors (317864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

286936 is a wasteful number, since it uses less digits than its factorization.

286936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 135 counting only the distinct ones).

The product of its digits is 15552, while the sum is 34.

The square root of 286936 is about 535.6640738373. The cubic root of 286936 is about 65.9571193761.

The spelling of 286936 in words is "two hundred eighty-six thousand, nine hundred thirty-six".