284830 has 32 divisors (see below), whose sum is σ = 633024. Its totient is φ = 89856.

The previous prime is 284819. The next prime is 284831. The reversal of 284830 is 38482.

It is a super-2 number, since 2×284830² = 162256257800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (25) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 284795 and 284804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284831) by changing a digit.

284830 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 754 + ... + 1066.

It is an arithmetic number, because the mean of its divisors is an integer number (19782).

2²⁸⁴⁸³⁰ is an apocalyptic number.

284830 is an abundant number, since it is smaller than the sum of its proper divisors (348194).

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

284830 is a wasteful number, since it uses less digits than its factorization.

284830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 284830 is about 533.6946692632. The cubic root of 284830 is about 65.7953563301.

The spelling of 284830 in words is "two hundred eighty-four thousand, eight hundred thirty".