284228851 has 4 divisors (see below), whose sum is σ = 291161304. Its totient is φ = 277296400.

The previous prime is 284228843. The next prime is 284228873. The reversal of 284228851 is 158822482.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 284228851 - 2³ = 284228843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (284228891) by changing a digit.

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, 3466165 + ... + 3466246.

It is an arithmetic number, because the mean of its divisors is an integer number (72790326).

Almost surely, 2^284228851 is an apocalyptic number.

284228851 is a deficient number, since it is larger than the sum of its proper divisors (6932453).

284228851 is an equidigital number, since it uses as much as digits as its factorization.

284228851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6932452.

The product of its digits is 81920, while the sum is 40.

The square root of 284228851 is about 16859.0880832861. The cubic root of 284228851 is about 657.4903551718.

It can be divided in two parts, 28422 and 8851, that added together give a palindrome (37273).

The spelling of 284228851 in words is "two hundred eighty-four million, two hundred twenty-eight thousand, eight hundred fifty-one".