283433985 has 24 divisors (see below), whose sum is σ = 509483520. Its totient is φ = 151164144.

The previous prime is 283433951. The next prime is 283433989. The reversal of 283433985 is 589334382.

It is not a de Polignac number, because 283433985 - 2⁸ = 283433729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 283433985.

It is not an unprimeable number, because it can be changed into a prime (283433989) 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 23 ways as a sum of consecutive naturals, for example, 115425 + ... + 117854.

It is an arithmetic number, because the mean of its divisors is an integer number (21228480).

Almost surely, 2^283433985 is an apocalyptic number.

It is an amenable number.

283433985 is a deficient number, since it is larger than the sum of its proper divisors (226049535).

283433985 is an equidigital number, since it uses as much as digits as its factorization.

283433985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233299 (or 233287 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 283433985 is about 16835.4977651390. The cubic root of 283433985 is about 656.8768769092.

The spelling of 283433985 in words is "two hundred eighty-three million, four hundred thirty-three thousand, nine hundred eighty-five".