284888 has 16 divisors (see below), whose sum is σ = 540000. Its totient is φ = 140896.

The previous prime is 284881. The next prime is 284897. The reversal of 284888 is 888482.

It is a super-2 number, since 2×284888² = 162322345088, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284881) by changing a digit.

284888 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1073 + ... + 1311.

It is an arithmetic number, because the mean of its divisors is an integer number (33750).

2²⁸⁴⁸⁸⁸ is an apocalyptic number.

It is an amenable number.

284888 is a deficient number, since it is larger than the sum of its proper divisors (255112).

284888 is a wasteful number, since it uses less digits than its factorization.

284888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 390 counting only the distinct ones).

The product of its digits is 32768, while the sum is 38.

The square root of 284888 is about 533.7490046829. The cubic root of 284888 is about 65.7998220017.

The spelling of 284888 in words is "two hundred eighty-four thousand, eight hundred eighty-eight".