284816 has 20 divisors (see below), whose sum is σ = 630912. Its totient is φ = 122016.

The previous prime is 284813. The next prime is 284819. The reversal of 284816 is 618482.

284816 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (284813) and next prime (284819).

It is a super-2 number, since 2×284816² = 162240307712, which contains 22 as substring.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (284813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1160 + ... + 1383.

2²⁸⁴⁸¹⁶ is an apocalyptic number.

It is an amenable number.

284816 is an abundant number, since it is smaller than the sum of its proper divisors (346096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

284816 is a wasteful number, since it uses less digits than its factorization.

284816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2558 (or 2552 counting only the distinct ones).

The product of its digits is 3072, while the sum is 29.

The square root of 284816 is about 533.6815529883. The cubic root of 284816 is about 65.7942783186.

The spelling of 284816 in words is "two hundred eighty-four thousand, eight hundred sixteen".