283845 has 16 divisors (see below), whose sum is σ = 460800. Its totient is φ = 149184.

The previous prime is 283837. The next prime is 283859. The reversal of 283845 is 548382.

It is not a de Polignac number, because 283845 - 2³ = 283837 is a prime.

283845 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1831 + ... + 1979.

It is an arithmetic number, because the mean of its divisors is an integer number (28800).

2²⁸³⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

283845 is a deficient number, since it is larger than the sum of its proper divisors (176955).

283845 is a wasteful number, since it uses less digits than its factorization.

283845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284.

The product of its digits is 7680, while the sum is 30.

The square root of 283845 is about 532.7710577725. The cubic root of 283845 is about 65.7194241639.

It can be divided in two parts, 283 and 845, that added together give a triangular number (1128 = T₄₇).

The spelling of 283845 in words is "two hundred eighty-three thousand, eight hundred forty-five".