285346 has 4 divisors (see below), whose sum is σ = 428022. Its totient is φ = 142672.

The previous prime is 285343. The next prime is 285377. The reversal of 285346 is 643582.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 239121 + 46225 = 489^2 + 215^2 .

It is a d-powerful number, because it can be written as 2¹⁰ + 8⁴ + 3² + 5² + 4⁴ + 6⁷ .

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 as a sum of consecutive naturals, namely, 71335 + ... + 71338.

2²⁸⁵³⁴⁶ is an apocalyptic number.

285346 is a deficient number, since it is larger than the sum of its proper divisors (142676).

285346 is a wasteful number, since it uses less digits than its factorization.

285346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142675.

The product of its digits is 5760, while the sum is 28.

The square root of 285346 is about 534.1778729974. The cubic root of 285346 is about 65.8350641358.

The spelling of 285346 in words is "two hundred eighty-five thousand, three hundred forty-six".