284028686 has 4 divisors (see below), whose sum is σ = 426043032. Its totient is φ = 142014342.

The previous prime is 284028659. The next prime is 284028709. The reversal of 284028686 is 686820482.

284028686 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 686820482 = 2 ⋅343410241.

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 as a sum of consecutive naturals, namely, 71007170 + ... + 71007173.

It is an arithmetic number, because the mean of its divisors is an integer number (106510758).

Almost surely, 2^284028686 is an apocalyptic number.

284028686 is a deficient number, since it is larger than the sum of its proper divisors (142014346).

284028686 is a wasteful number, since it uses less digits than its factorization.

284028686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142014345.

The product of its (nonzero) digits is 294912, while the sum is 44.

The square root of 284028686 is about 16853.1506253282. The cubic root of 284028686 is about 657.3359755083.

The spelling of 284028686 in words is "two hundred eighty-four million, twenty-eight thousand, six hundred eighty-six".