284660 has 24 divisors (see below), whose sum is σ = 613536. Its totient is φ = 110880.

The previous prime is 284659. The next prime is 284681. The reversal of 284660 is 66482.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 284660.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 695 + ... + 1025.

It is an arithmetic number, because the mean of its divisors is an integer number (25564).

2²⁸⁴⁶⁶⁰ is an apocalyptic number.

284660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 284660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306768).

284660 is an abundant number, since it is smaller than the sum of its proper divisors (328876).

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

284660 is a wasteful number, since it uses less digits than its factorization.

284660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 284660 is about 533.5353783958. The cubic root of 284660 is about 65.7822637994.

The spelling of 284660 in words is "two hundred eighty-four thousand, six hundred sixty".