285304285 has 32 divisors (see below), whose sum is σ = 436112640. Its totient is φ = 174431232.

The previous prime is 285304277. The next prime is 285304297. The reversal of 285304285 is 582403582.

It is a cyclic number.

It is not a de Polignac number, because 285304285 - 2³ = 285304277 is a prime.

It is a super-2 number, since 2×285304285² = 162797070078722450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1314 + ... + 23923.

It is an arithmetic number, because the mean of its divisors is an integer number (13628520).

Almost surely, 2^285304285 is an apocalyptic number.

It is an amenable number.

285304285 is a deficient number, since it is larger than the sum of its proper divisors (150808355).

285304285 is a wasteful number, since it uses less digits than its factorization.

285304285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25285.

The product of its (nonzero) digits is 76800, while the sum is 37.

The square root of 285304285 is about 16890.9527558394. The cubic root of 285304285 is about 658.3185581615.

The spelling of 285304285 in words is "two hundred eighty-five million, three hundred four thousand, two hundred eighty-five".