Base | Representation |
---|---|
bin | 100100011100000… |
… | …1111001111110001 |
3 | 10011012201200220200 |
4 | 1020320033033301 |
5 | 10001002431230 |
6 | 321154425413 |
7 | 42204540024 |
oct | 11070171761 |
9 | 3135650820 |
10 | 1222702065 |
11 | 578202182 |
12 | 2a1592269 |
13 | 166412760 |
14 | b855d1bb |
15 | 72522160 |
hex | 48e0f3f1 |
1222702065 has 24 divisors (see below), whose sum is σ = 2282378280. Its totient is φ = 601945344.
The previous prime is 1222702051. The next prime is 1222702081. The reversal of 1222702065 is 5602072221.
It can be written as a sum of positive squares in 4 ways, for example, as 31002624 + 1191699441 = 5568^2 + 34521^2 .
It is not a de Polignac number, because 1222702065 - 26 = 1222702001 is a prime.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1044460 + ... + 1045629.
It is an arithmetic number, because the mean of its divisors is an integer number (95099095).
Almost surely, 21222702065 is an apocalyptic number.
1222702065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
1222702065 is a deficient number, since it is larger than the sum of its proper divisors (1059676215).
1222702065 is a wasteful number, since it uses less digits than its factorization.
1222702065 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2090113 (or 2090110 counting only the distinct ones).
The product of its (nonzero) digits is 3360, while the sum is 27.
The square root of 1222702065 is about 34967.1569476273. The cubic root of 1222702065 is about 1069.3180109812.
Adding to 1222702065 its reverse (5602072221), we get a palindrome (6824774286).
The spelling of 1222702065 in words is "one billion, two hundred twenty-two million, seven hundred two thousand, sixty-five".
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