Base | Representation |
---|---|
bin | 10001001000011… |
… | …100001010110001 |
3 | 202000211201020211 |
4 | 101020130022301 |
5 | 1042040101301 |
6 | 44304304121 |
7 | 10060034230 |
oct | 2110341261 |
9 | 660751224 |
10 | 287425201 |
11 | 138275898 |
12 | 80312041 |
13 | 477172ab |
14 | 2a25cb17 |
15 | 1a378051 |
hex | 1121c2b1 |
287425201 has 24 divisors (see below), whose sum is σ = 343465920. Its totient is φ = 235531296.
The previous prime is 287425199. The next prime is 287425231. The reversal of 287425201 is 102524782.
It is a happy number.
It is not a de Polignac number, because 287425201 - 21 = 287425199 is a prime.
It is a super-2 number, since 2×2874252012 = 165226492339780802, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (287425231) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 685770 + ... + 686188.
It is an arithmetic number, because the mean of its divisors is an integer number (14311080).
Almost surely, 2287425201 is an apocalyptic number.
It is an amenable number.
287425201 is a deficient number, since it is larger than the sum of its proper divisors (56040719).
287425201 is an equidigital number, since it uses as much as digits as its factorization.
287425201 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 565 (or 522 counting only the distinct ones).
The product of its (nonzero) digits is 8960, while the sum is 31.
The square root of 287425201 is about 16953.6191121542. The cubic root of 287425201 is about 659.9458181723.
Adding to 287425201 its reverse (102524782), we get a palindrome (389949983).
The spelling of 287425201 in words is "two hundred eighty-seven million, four hundred twenty-five thousand, two hundred one".
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