284381 has 4 divisors (see below), whose sum is σ = 287100. Its totient is φ = 281664.

The previous prime is 284377. The next prime is 284387. The reversal of 284381 is 183482.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 168100 + 116281 = 410^2 + 341^2 .

It is a cyclic number.

It is not a de Polignac number, because 284381 - 2² = 284377 is a prime.

It is a super-2 number, since 2×284381² = 161745106322, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 284381.

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 284381.

It is not an unprimeable number, because it can be changed into a prime (284387) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1196 + ... + 1413.

It is an arithmetic number, because the mean of its divisors is an integer number (71775).

2²⁸⁴³⁸¹ is an apocalyptic number.

It is an amenable number.

284381 is a deficient number, since it is larger than the sum of its proper divisors (2719).

284381 is a wasteful number, since it uses less digits than its factorization.

284381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2718.

The product of its digits is 1536, while the sum is 26.

The square root of 284381 is about 533.2738508496. The cubic root of 284381 is about 65.7607653439.

The spelling of 284381 in words is "two hundred eighty-four thousand, three hundred eighty-one".