Base | Representation |
---|---|
bin | 11000110101000… |
… | …10101001101101 |
3 | 112111220221022012 |
4 | 30122202221231 |
5 | 411310044034 |
6 | 32400131005 |
7 | 5106246524 |
oct | 1432425155 |
9 | 474827265 |
10 | 208284269 |
11 | a7631066 |
12 | 59906a65 |
13 | 341c7c3b |
14 | 1d93b4bb |
15 | 13443cce |
hex | c6a2a6d |
208284269 has 4 divisors (see below), whose sum is σ = 209682300. Its totient is φ = 206886240.
The previous prime is 208284259. The next prime is 208284287. The reversal of 208284269 is 962482802.
208284269 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 962482802 = 2 ⋅481241401.
It can be written as a sum of positive squares in 2 ways, for example, as 11303044 + 196981225 = 3362^2 + 14035^2 .
It is a cyclic number.
It is not a de Polignac number, because 208284269 - 24 = 208284253 is a prime.
It is a super-2 number, since 2×2082842692 = 86764673425728722, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (208284229) 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, 698792 + ... + 699089.
It is an arithmetic number, because the mean of its divisors is an integer number (52420575).
Almost surely, 2208284269 is an apocalyptic number.
It is an amenable number.
208284269 is a deficient number, since it is larger than the sum of its proper divisors (1398031).
208284269 is a wasteful number, since it uses less digits than its factorization.
208284269 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1398030.
The product of its (nonzero) digits is 110592, while the sum is 41.
The square root of 208284269 is about 14432.0569912955. The cubic root of 208284269 is about 592.7690093349.
The spelling of 208284269 in words is "two hundred eight million, two hundred eighty-four thousand, two hundred sixty-nine".
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