284980 has 12 divisors (see below), whose sum is σ = 598500. Its totient is φ = 113984.

The previous prime is 284969. The next prime is 284989. The reversal of 284980 is 89482.

It can be written as a sum of positive squares in 2 ways, for example, as 156816 + 128164 = 396^2 + 358^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284989) by changing a digit.

284980 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 3 ways as a sum of consecutive naturals, for example, 7105 + ... + 7144.

It is an arithmetic number, because the mean of its divisors is an integer number (49875).

2²⁸⁴⁹⁸⁰ is an apocalyptic number.

284980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

284980 is an abundant number, since it is smaller than the sum of its proper divisors (313520).

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

284980 is a wasteful number, since it uses less digits than its factorization.

284980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14258 (or 14256 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 284980 is about 533.8351805567. The cubic root of 284980 is about 65.8069042376.

The spelling of 284980 in words is "two hundred eighty-four thousand, nine hundred eighty".