285363 has 20 divisors (see below), whose sum is σ = 460768. Its totient is φ = 174960.

The previous prime is 285343. The next prime is 285377. The reversal of 285363 is 363582.

It is not a de Polignac number, because 285363 - 2¹⁴ = 268979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 2¹¹ + 8 + 3 + 5⁵ + 6⁷ + 3⁵ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285343) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 918 + ... + 1188.

2²⁸⁵³⁶³ is an apocalyptic number.

285363 is a deficient number, since it is larger than the sum of its proper divisors (175405).

285363 is a wasteful number, since it uses less digits than its factorization.

285363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296 (or 287 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 285363 is about 534.1937850631. The cubic root of 285363 is about 65.8363715239.

Adding to 285363 its sum of digits (27), we get a triangular number (285390 = T₇₅₅).

It can be divided in two parts, 2853 and 63, that added together give a square (2916 = 54²).

The spelling of 285363 in words is "two hundred eighty-five thousand, three hundred sixty-three".