285431022 has 24 divisors (see below), whose sum is σ = 626908464. Its totient is φ = 93839904.

The previous prime is 285431011. The next prime is 285431039. The reversal of 285431022 is 220134582.

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 11 ways as a sum of consecutive naturals, for example, 107298 + ... + 109925.

It is an arithmetic number, because the mean of its divisors is an integer number (26121186).

Almost surely, 2^285431022 is an apocalyptic number.

285431022 is an abundant number, since it is smaller than the sum of its proper divisors (341477442).

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

285431022 is a wasteful number, since it uses less digits than its factorization.

285431022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217304 (or 217301 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 285431022 is about 16894.7039630767. The cubic root of 285431022 is about 658.4160224857.

The spelling of 285431022 in words is "two hundred eighty-five million, four hundred thirty-one thousand, twenty-two".