Base | Representation |
---|---|
bin | 111101001100011100011 |
3 | 10202212122101 |
4 | 13221203203 |
5 | 1003131334 |
6 | 110551231 |
7 | 23021056 |
oct | 7514343 |
9 | 3685571 |
10 | 2005219 |
11 | 114a607 |
12 | 808517 |
13 | 552928 |
14 | 3a2a9d |
15 | 299214 |
hex | 1e98e3 |
2005219 has 4 divisors (see below), whose sum is σ = 2051896. Its totient is φ = 1958544.
The previous prime is 2005207. The next prime is 2005229. The reversal of 2005219 is 9125002.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9125002 = 2 ⋅4562501.
It is a cyclic number.
It is not a de Polignac number, because 2005219 - 219 = 1480931 is a prime.
It is a super-2 number, since 2×20052192 = 8041806475922, which contains 22 as substring.
It is a Duffinian number.
2005219 is a lucky number.
It is a junction number, because it is equal to n+sod(n) for n = 2005196 and 2005205.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2005229) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23274 + ... + 23359.
It is an arithmetic number, because the mean of its divisors is an integer number (512974).
22005219 is an apocalyptic number.
2005219 is a deficient number, since it is larger than the sum of its proper divisors (46677).
2005219 is an equidigital number, since it uses as much as digits as its factorization.
2005219 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 46676.
The product of its (nonzero) digits is 180, while the sum is 19.
The square root of 2005219 is about 1416.0575553275. The cubic root of 2005219 is about 126.1016019332.
The spelling of 2005219 in words is "two million, five thousand, two hundred nineteen".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.177 sec. • engine limits •