284247 has 6 divisors (see below), whose sum is σ = 410592. Its totient is φ = 189492.

The previous prime is 284243. The next prime is 284261. The reversal of 284247 is 742482.

It is not a de Polignac number, because 284247 - 2² = 284243 is a prime.

It is a d-powerful number, because it can be written as 2¹⁴ + 8⁴ + 2¹⁸ + 4⁴ + 4⁵ + 7³ .

It is a self number, because there is not a number n which added to its sum of digits gives 284247.

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 284247.

It is not an unprimeable number, because it can be changed into a prime (284243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15783 + ... + 15800.

It is an arithmetic number, because the mean of its divisors is an integer number (68432).

2²⁸⁴²⁴⁷ is an apocalyptic number.

284247 is a deficient number, since it is larger than the sum of its proper divisors (126345).

284247 is a wasteful number, since it uses less digits than its factorization.

284247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31589 (or 31586 counting only the distinct ones).

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

The square root of 284247 is about 533.1481970334. The cubic root of 284247 is about 65.7504349222.

The spelling of 284247 in words is "two hundred eighty-four thousand, two hundred forty-seven".