285727 has 8 divisors (see below), whose sum is σ = 318080. Its totient is φ = 254880.

The previous prime is 285721. The next prime is 285731. The reversal of 285727 is 727582.

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

It is a cyclic number.

It is not a de Polignac number, because 285727 - 2⁷ = 285599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a d-powerful number, because it can be written as 2¹¹ + 8⁴ + 7 + 5⁴ + 2¹⁸ + 7⁵ .

It is a Duffinian number.

285727 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285721) 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, 49 + ... + 757.

It is an arithmetic number, because the mean of its divisors is an integer number (39760).

2²⁸⁵⁷²⁷ is an apocalyptic number.

285727 is a deficient number, since it is larger than the sum of its proper divisors (32353).

285727 is a wasteful number, since it uses less digits than its factorization.

285727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753.

The product of its digits is 7840, while the sum is 31.

The square root of 285727 is about 534.5343768178. The cubic root of 285727 is about 65.8643525597.

The spelling of 285727 in words is "two hundred eighty-five thousand, seven hundred twenty-seven".