284742 has 16 divisors (see below), whose sum is σ = 632880. Its totient is φ = 94896.

The previous prime is 284741. The next prime is 284743. The reversal of 284742 is 247482.

It is an interprime number because it is at equal distance from previous prime (284741) and next prime (284743).

It is a Harshad number since it is a multiple of its sum of digits (27).

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 284742.

It is not an unprimeable number, because it can be changed into a prime (284741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2583 + ... + 2690.

It is an arithmetic number, because the mean of its divisors is an integer number (39555).

2²⁸⁴⁷⁴² is an apocalyptic number.

284742 is an abundant number, since it is smaller than the sum of its proper divisors (348138).

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

284742 is a wasteful number, since it uses less digits than its factorization.

284742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5284 (or 5278 counting only the distinct ones).

The product of its digits is 3584, while the sum is 27.

The square root of 284742 is about 533.6122187507. The cubic root of 284742 is about 65.7885796707.

The spelling of 284742 in words is "two hundred eighty-four thousand, seven hundred forty-two".