285226 has 8 divisors (see below), whose sum is σ = 453060. Its totient is φ = 134208.

The previous prime is 285221. The next prime is 285227. The reversal of 285226 is 622582.

It can be written as a sum of positive squares in 2 ways, for example, as 251001 + 34225 = 501^2 + 185^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 285226.

It is not an unprimeable number, because it can be changed into a prime (285221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4161 + ... + 4228.

2²⁸⁵²²⁶ is an apocalyptic number.

285226 is a deficient number, since it is larger than the sum of its proper divisors (167834).

285226 is a wasteful number, since it uses less digits than its factorization.

285226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8408.

The product of its digits is 1920, while the sum is 25.

The square root of 285226 is about 534.0655390493. The cubic root of 285226 is about 65.8258340369.

The spelling of 285226 in words is "two hundred eighty-five thousand, two hundred twenty-six".