285286469 has 16 divisors (see below), whose sum is σ = 330176448. Its totient is φ = 244138752.

The previous prime is 285286451. The next prime is 285286499. The reversal of 285286469 is 964682582.

It is not a de Polignac number, because 285286469 - 2⁸ = 285286213 is a prime.

It is a super-2 number, since 2×285286469² = 162776738788975922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285286499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5174 + ... + 24440.

It is an arithmetic number, because the mean of its divisors is an integer number (20636028).

Almost surely, 2^285286469 is an apocalyptic number.

It is an amenable number.

285286469 is a deficient number, since it is larger than the sum of its proper divisors (44889979).

285286469 is a wasteful number, since it uses less digits than its factorization.

285286469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19364.

The product of its digits is 1658880, while the sum is 50.

The square root of 285286469 is about 16890.4253646852. The cubic root of 285286469 is about 658.3048548417.

The spelling of 285286469 in words is "two hundred eighty-five million, two hundred eighty-six thousand, four hundred sixty-nine".