284428855 has 8 divisors (see below), whose sum is σ = 341417232. Its totient is φ = 227474688.

The previous prime is 284428829. The next prime is 284428861. The reversal of 284428855 is 558824482.

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

It is a cyclic number.

It is not a de Polignac number, because 284428855 - 2¹³ = 284420663 is a prime.

It is a super-2 number, since 2×284428855² = 161799547113222050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16327 + ... + 28903.

It is an arithmetic number, because the mean of its divisors is an integer number (42677154).

Almost surely, 2^284428855 is an apocalyptic number.

284428855 is a deficient number, since it is larger than the sum of its proper divisors (56988377).

284428855 is a wasteful number, since it uses less digits than its factorization.

284428855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17105.

The product of its digits is 819200, while the sum is 46.

The square root of 284428855 is about 16865.0186777246. The cubic root of 284428855 is about 657.6445382865.

The spelling of 284428855 in words is "two hundred eighty-four million, four hundred twenty-eight thousand, eight hundred fifty-five".