284045 has 4 divisors (see below), whose sum is σ = 340860. Its totient is φ = 227232.

The previous prime is 284041. The next prime is 284051. The reversal of 284045 is 540482.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 540482 = 2 ⋅270241.

It can be written as a sum of positive squares in 2 ways, for example, as 32041 + 252004 = 179^2 + 502^2 .

It is a cyclic number.

It is not a de Polignac number, because 284045 - 2² = 284041 is a prime.

It is a Curzon 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 284045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28400 + ... + 28409.

It is an arithmetic number, because the mean of its divisors is an integer number (85215).

2²⁸⁴⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

284045 is a deficient number, since it is larger than the sum of its proper divisors (56815).

284045 is an equidigital number, since it uses as much as digits as its factorization.

284045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56814.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 284045 is about 532.9587226043. The cubic root of 284045 is about 65.7348560591.

The spelling of 284045 in words is "two hundred eighty-four thousand, forty-five".