Base | Representation |
---|---|
bin | 100111010100000001001 |
3 | 2102110002011 |
4 | 10322200021 |
5 | 312210301 |
6 | 43335521 |
7 | 13643455 |
oct | 4724011 |
9 | 2373064 |
10 | 1288201 |
11 | 7aa932 |
12 | 5215a1 |
13 | 361465 |
14 | 257665 |
15 | 1a6a51 |
hex | 13a809 |
1288201 has 2 divisors, whose sum is σ = 1288202. Its totient is φ = 1288200.
The previous prime is 1288193. The next prime is 1288213. The reversal of 1288201 is 1028821.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 1166400 + 121801 = 1080^2 + 349^2 .
It is a cyclic number.
It is not a de Polignac number, because 1288201 - 23 = 1288193 is a prime.
It is not a weakly prime, because it can be changed into another prime (1288291) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644100 + 644101.
It is an arithmetic number, because the mean of its divisors is an integer number (644101).
21288201 is an apocalyptic number.
It is an amenable number.
1288201 is a deficient number, since it is larger than the sum of its proper divisors (1).
1288201 is an equidigital number, since it uses as much as digits as its factorization.
1288201 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 256, while the sum is 22.
The square root of 1288201 is about 1134.9894272635. The cubic root of 1288201 is about 108.8080959680.
It can be divided in two parts, 128820 and 1, that added together give a palindrome (128821).
The spelling of 1288201 in words is "one million, two hundred eighty-eight thousand, two hundred one".
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