284868255 has 32 divisors (see below), whose sum is σ = 528689664. Its totient is φ = 128278656.

The previous prime is 284868253. The next prime is 284868281. The reversal of 284868255 is 552868482.

It is a happy number.

It is not a de Polignac number, because 284868255 - 2¹ = 284868253 is a prime.

It is a super-2 number, since 2×284868255² = 162299845413490050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284868253) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 13212 + ... + 27281.

It is an arithmetic number, because the mean of its divisors is an integer number (16521552).

Almost surely, 2^284868255 is an apocalyptic number.

284868255 is a deficient number, since it is larger than the sum of its proper divisors (243821409).

284868255 is a wasteful number, since it uses less digits than its factorization.

284868255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40575.

The product of its digits is 1228800, while the sum is 48.

The square root of 284868255 is about 16878.0406149529. The cubic root of 284868255 is about 657.9830181653.

The spelling of 284868255 in words is "two hundred eighty-four million, eight hundred sixty-eight thousand, two hundred fifty-five".