285219 has 24 divisors (see below), whose sum is σ = 466752. Its totient is φ = 166320.

The previous prime is 285199. The next prime is 285221. The reversal of 285219 is 912582.

It is not a de Polignac number, because 285219 - 2⁷ = 285091 is a prime.

It is a super-2 number, since 2×285219² = 162699755922, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2² + 8⁶ + 2¹⁴ + 5³ + 1 + 9⁴ .

It is a junction number, because it is equal to n+sod(n) for n = 285192 and 285201.

It is not an unprimeable number, because it can be changed into a prime (285289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4224 + ... + 4290.

It is an arithmetic number, because the mean of its divisors is an integer number (19448).

2²⁸⁵²¹⁹ is an apocalyptic number.

285219 is a deficient number, since it is larger than the sum of its proper divisors (181533).

285219 is a wasteful number, since it uses less digits than its factorization.

285219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 124 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 285219 is about 534.0589855063. The cubic root of 285219 is about 65.8252955346.

The spelling of 285219 in words is "two hundred eighty-five thousand, two hundred nineteen".