284881 has 2 divisors, whose sum is σ = 284882. Its totient is φ = 284880.

The previous prime is 284857. The next prime is 284897. The reversal of 284881 is 188482.

284881 is nontrivially palindromic in base 2.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 234256 + 50625 = 484^2 + 225^2 .

It is a cyclic number.

It is not a de Polignac number, because 284881 - 2⁹ = 284369 is a prime.

It is a super-2 number, since 2×284881² = 162314368322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (284831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142440 + 142441.

It is an arithmetic number, because the mean of its divisors is an integer number (142441).

2²⁸⁴⁸⁸¹ is an apocalyptic number.

It is an amenable number.

284881 is a deficient number, since it is larger than the sum of its proper divisors (1).

284881 is an equidigital number, since it uses as much as digits as its factorization.

284881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4096, while the sum is 31.

The square root of 284881 is about 533.7424472534. The cubic root of 284881 is about 65.7992830735.

The spelling of 284881 in words is "two hundred eighty-four thousand, eight hundred eighty-one".