284145 has 16 divisors (see below), whose sum is σ = 479040. Its totient is φ = 143424.

The previous prime is 284131. The next prime is 284149. The reversal of 284145 is 541482.

It is not a de Polignac number, because 284145 - 2⁴ = 284129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (284149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214 + ... + 783.

It is an arithmetic number, because the mean of its divisors is an integer number (29940).

2²⁸⁴¹⁴⁵ is an apocalyptic number.

It is an amenable number.

284145 is a deficient number, since it is larger than the sum of its proper divisors (194895).

284145 is a wasteful number, since it uses less digits than its factorization.

284145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024.

The product of its digits is 1280, while the sum is 24.

The square root of 284145 is about 533.0525302444. The cubic root of 284145 is about 65.7425692904.

The spelling of 284145 in words is "two hundred eighty-four thousand, one hundred forty-five".