285112238 has 8 divisors (see below), whose sum is σ = 427959288. Its totient is φ = 142459144.

The previous prime is 285112229. The next prime is 285112241. The reversal of 285112238 is 832211582.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44756 + ... + 50727.

It is an arithmetic number, because the mean of its divisors is an integer number (53494911).

Almost surely, 2^285112238 is an apocalyptic number.

285112238 is a deficient number, since it is larger than the sum of its proper divisors (142847050).

285112238 is a wasteful number, since it uses less digits than its factorization.

285112238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96978.

The product of its digits is 7680, while the sum is 32.

The square root of 285112238 is about 16885.2668915833. The cubic root of 285112238 is about 658.1708135850.

The spelling of 285112238 in words is "two hundred eighty-five million, one hundred twelve thousand, two hundred thirty-eight".