285256122 has 32 divisors (see below), whose sum is σ = 592574400. Its totient is φ = 91435008.

The previous prime is 285256121. The next prime is 285256157. The reversal of 285256122 is 221652582.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (285256121) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 41529 + ... + 47907.

It is an arithmetic number, because the mean of its divisors is an integer number (18517950).

Almost surely, 2^285256122 is an apocalyptic number.

285256122 is an abundant number, since it is smaller than the sum of its proper divisors (307318278).

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

285256122 is a wasteful number, since it uses less digits than its factorization.

285256122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6670.

The product of its digits is 19200, while the sum is 33.

The square root of 285256122 is about 16889.5269916004. The cubic root of 285256122 is about 658.2815118888.

The spelling of 285256122 in words is "two hundred eighty-five million, two hundred fifty-six thousand, one hundred twenty-two".