284649 has 8 divisors (see below), whose sum is σ = 382080. Its totient is φ = 188496.

The previous prime is 284633. The next prime is 284651. The reversal of 284649 is 946482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 284649 - 2⁴ = 284633 is a prime.

It is a d-powerful number, because it can be written as 2⁵ + 8³ + 6⁷ + 4³ + 4⁶ + 9 .

284649 is a lucky number.

It is a plaindrome in base 12.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 284649.

It is not an unprimeable number, because it can be changed into a prime (284659) 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 7 ways as a sum of consecutive naturals, for example, 519 + ... + 915.

It is an arithmetic number, because the mean of its divisors is an integer number (47760).

2²⁸⁴⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

284649 is a deficient number, since it is larger than the sum of its proper divisors (97431).

284649 is a wasteful number, since it uses less digits than its factorization.

284649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639.

The product of its digits is 13824, while the sum is 33.

The square root of 284649 is about 533.5250697015. The cubic root of 284649 is about 65.7814164561.

The spelling of 284649 in words is "two hundred eighty-four thousand, six hundred forty-nine".