286020 has 72 divisors (see below), whose sum is σ = 995904. Its totient is φ = 65088.

The previous prime is 286019. The next prime is 286043. The reversal of 286020 is 20682.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 285984 and 286002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1147 + ... + 1373.

It is an arithmetic number, because the mean of its divisors is an integer number (13832).

2²⁸⁶⁰²⁰ is an apocalyptic number.

286020 is a gapful number since it is divisible by the number (20) 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 286020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (497952).

286020 is an abundant number, since it is smaller than the sum of its proper divisors (709884).

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

286020 is a wasteful number, since it uses less digits than its factorization.

286020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 286020 is about 534.8083768977. The cubic root of 286020 is about 65.8868584979.

The spelling of 286020 in words is "two hundred eighty-six thousand, twenty".