284427 has 36 divisors (see below), whose sum is σ = 513864. Its totient is φ = 149760.

The previous prime is 284423. The next prime is 284429. The reversal of 284427 is 724482.

It is not a de Polignac number, because 284427 - 2² = 284423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 284427.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 284427.

It is not an unprimeable number, because it can be changed into a prime (284423) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 16723 + ... + 16739.

It is an arithmetic number, because the mean of its divisors is an integer number (14274).

2²⁸⁴⁴²⁷ is an apocalyptic number.

284427 is a deficient number, since it is larger than the sum of its proper divisors (229437).

284427 is a wasteful number, since it uses less digits than its factorization.

284427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60 (or 44 counting only the distinct ones).

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

The square root of 284427 is about 533.3169789159. The cubic root of 284427 is about 65.7643108599.

The spelling of 284427 in words is "two hundred eighty-four thousand, four hundred twenty-seven".