Base | Representation |
---|---|
bin | 1000110110010111111 |
3 | 112201210010 |
4 | 1012302333 |
5 | 33234413 |
6 | 10114303 |
7 | 2315301 |
oct | 1066277 |
9 | 481703 |
10 | 289983 |
11 | 188961 |
12 | 11b993 |
13 | a1cb5 |
14 | 77971 |
15 | 5adc3 |
hex | 46cbf |
289983 has 4 divisors (see below), whose sum is σ = 386648. Its totient is φ = 193320.
The previous prime is 289973. The next prime is 289987. The reversal of 289983 is 389982.
It is a semiprime because it is the product of two primes.
It is not a de Polignac number, because 289983 - 24 = 289967 is a prime.
It is a D-number.
It is the 539-th Hogben number.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (289987) by changing a digit.
It is a nontrivial repunit in base 538.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48328 + ... + 48333.
It is an arithmetic number, because the mean of its divisors is an integer number (96662).
2289983 is an apocalyptic number.
289983 is a deficient number, since it is larger than the sum of its proper divisors (96665).
289983 is an equidigital number, since it uses as much as digits as its factorization.
289983 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 96664.
The product of its digits is 31104, while the sum is 39.
The square root of 289983 is about 538.5006963784. The cubic root of 289983 is about 66.1897660665.
Subtracting 289983 from its reverse (389982), we obtain a palindrome (99999).
It can be divided in two parts, 28 and 9983, that added together give a triangular number (10011 = T141).
The spelling of 289983 in words is "two hundred eighty-nine thousand, nine hundred eighty-three".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.074 sec. • engine limits •