285734 has 4 divisors (see below), whose sum is σ = 428604. Its totient is φ = 142866.

The previous prime is 285731. The next prime is 285749. The reversal of 285734 is 437582.

It is a happy number.

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

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 285697 and 285706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71432 + ... + 71435.

It is an arithmetic number, because the mean of its divisors is an integer number (107151).

2²⁸⁵⁷³⁴ is an apocalyptic number.

285734 is a deficient number, since it is larger than the sum of its proper divisors (142870).

285734 is a wasteful number, since it uses less digits than its factorization.

285734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142869.

The product of its digits is 6720, while the sum is 29.

The square root of 285734 is about 534.5409245324. The cubic root of 285734 is about 65.8648904236.

The spelling of 285734 in words is "two hundred eighty-five thousand, seven hundred thirty-four".