285073 has 8 divisors (see below), whose sum is σ = 309960. Its totient is φ = 261120.

The previous prime is 285071. The next prime is 285079. The reversal of 285073 is 370582.

It can be written as a sum of positive squares in 4 ways, for example, as 66049 + 219024 = 257^2 + 468^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 285073 - 2¹ = 285071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (285071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 493 + ... + 901.

It is an arithmetic number, because the mean of its divisors is an integer number (38745).

2²⁸⁵⁰⁷³ is an apocalyptic number.

It is an amenable number.

285073 is a deficient number, since it is larger than the sum of its proper divisors (24887).

285073 is a wasteful number, since it uses less digits than its factorization.

285073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 285073 is about 533.9222789882. The cubic root of 285073 is about 65.8140619054.

The spelling of 285073 in words is "two hundred eighty-five thousand, seventy-three".