Base | Representation |
---|---|
bin | 110001111001… |
… | …110111100001 |
3 | 220121122020112 |
4 | 301321313201 |
5 | 11322111311 |
6 | 1144221105 |
7 | 216124115 |
oct | 61716741 |
9 | 26548215 |
10 | 13082081 |
11 | 7425841 |
12 | 446a795 |
13 | 293069c |
14 | 1a47745 |
15 | 123628b |
hex | c79de1 |
13082081 has 2 divisors, whose sum is σ = 13082082. Its totient is φ = 13082080.
The previous prime is 13082077. The next prime is 13082107. The reversal of 13082081 is 18028031.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 8755681 + 4326400 = 2959^2 + 2080^2 .
It is a cyclic number.
It is not a de Polignac number, because 13082081 - 22 = 13082077 is a prime.
It is a super-2 number, since 2×130820812 = 342281686581122, which contains 22 as substring.
It is equal to p854213 and since 13082081 and 854213 have the same sum of digits, it is a Honaker prime.
It is not a weakly prime, because it can be changed into another prime (13082581) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6541040 + 6541041.
It is an arithmetic number, because the mean of its divisors is an integer number (6541041).
Almost surely, 213082081 is an apocalyptic number.
It is an amenable number.
13082081 is a deficient number, since it is larger than the sum of its proper divisors (1).
13082081 is an equidigital number, since it uses as much as digits as its factorization.
13082081 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 384, while the sum is 23.
The square root of 13082081 is about 3616.9159514703. The cubic root of 13082081 is about 235.6273024281.
The spelling of 13082081 in words is "thirteen million, eighty-two thousand, eighty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.068 sec. • engine limits •