285802 has 12 divisors (see below), whose sum is σ = 471618. Its totient is φ = 129800.

The previous prime is 285781. The next prime is 285823. The reversal of 285802 is 208582.

It is an interprime number because it is at equal distance from previous prime (285781) and next prime (285823).

It can be written as a sum of positive squares in only one way, i.e., 184041 + 101761 = 429^2 + 319^2 .

It is an unprimeable number.

285802 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 349 + ... + 832.

2²⁸⁵⁸⁰² is an apocalyptic number.

285802 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

285802 is a deficient number, since it is larger than the sum of its proper divisors (185816).

285802 is a wasteful number, since it uses less digits than its factorization.

285802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205 (or 1194 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 285802 is about 534.6045267298. The cubic root of 285802 is about 65.8701149300.

It can be divided in two parts, 28580 and 2, that added together give a palindrome (28582).

The spelling of 285802 in words is "two hundred eighty-five thousand, eight hundred two".