285055438 has 8 divisors (see below), whose sum is σ = 428549688. Its totient is φ = 142205544.

The previous prime is 285055417. The next prime is 285055457. The reversal of 285055438 is 834550582.

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

It is a self number, because there is not a number n which added to its sum of digits gives 285055438.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159981 + ... + 161752.

It is an arithmetic number, because the mean of its divisors is an integer number (53568711).

Almost surely, 2^285055438 is an apocalyptic number.

285055438 is a deficient number, since it is larger than the sum of its proper divisors (143494250).

285055438 is a wasteful number, since it uses less digits than its factorization.

285055438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322178.

The product of its (nonzero) digits is 192000, while the sum is 40.

The square root of 285055438 is about 16883.5848681493. The cubic root of 285055438 is about 658.1271037986.

The spelling of 285055438 in words is "two hundred eighty-five million, fifty-five thousand, four hundred thirty-eight".