285150 has 24 divisors (see below), whose sum is σ = 707544. Its totient is φ = 76000.

The previous prime is 285139. The next prime is 285151. The reversal of 285150 is 51582.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 16.

It is a nialpdrome in base 5.

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285151) by changing a digit.

285150 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 801 + ... + 1100.

It is an arithmetic number, because the mean of its divisors is an integer number (29481).

2²⁸⁵¹⁵⁰ is an apocalyptic number.

285150 is an abundant number, since it is smaller than the sum of its proper divisors (422394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

285150 is a wasteful number, since it uses less digits than its factorization.

285150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916 (or 1911 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 285150 is about 533.9943819929. The cubic root of 285150 is about 65.8199869685.

It can be divided in two parts, 285 and 150, that added together give a triangular number (435 = T₂₉).

The spelling of 285150 in words is "two hundred eighty-five thousand, one hundred fifty".