283881 has 16 divisors (see below), whose sum is σ = 423360. Its totient is φ = 168000.

The previous prime is 283873. The next prime is 283909. The reversal of 283881 is 188382.

283881 is a nontrivial binomial coefficient, being equal to C(754, 2).

It is not a de Polignac number, because 283881 - 2³ = 283873 is a prime.

It is a super-2 number, since 2×283881² = 161176844322, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 283881.

It is not an unprimeable number, because it can be changed into a prime (283831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1006 + ... + 1256.

It is an arithmetic number, because the mean of its divisors is an integer number (26460).

2²⁸³⁸⁸¹ is an apocalyptic number.

283881 is the 753-rd triangular number and also the 377-th hexagonal number.

It is an amenable number.

283881 is a deficient number, since it is larger than the sum of its proper divisors (139479).

283881 is a wasteful number, since it uses less digits than its factorization.

283881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296.

The product of its digits is 3072, while the sum is 30.

The square root of 283881 is about 532.8048423203. The cubic root of 283881 is about 65.7222024399.

The spelling of 283881 in words is "two hundred eighty-three thousand, eight hundred eighty-one".