Base | Representation |
---|---|
bin | 1111011111110… |
… | …11100010011001 |
3 | 100001121221112101 |
4 | 13233323202121 |
5 | 231240131040 |
6 | 20522243401 |
7 | 3136011514 |
oct | 757734231 |
9 | 301557471 |
10 | 130005145 |
11 | 67425876 |
12 | 37656561 |
13 | 20c1ac2a |
14 | 133a1d7b |
15 | b63009a |
hex | 7bfb899 |
130005145 has 8 divisors (see below), whose sum is σ = 156286656. Its totient is φ = 103817136.
The previous prime is 130005119. The next prime is 130005151. The reversal of 130005145 is 541500031.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 130005145 - 27 = 130005017 is a prime.
It is a Duffinian number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20277 + ... + 25906.
It is an arithmetic number, because the mean of its divisors is an integer number (19535832).
Almost surely, 2130005145 is an apocalyptic number.
It is an amenable number.
130005145 is a deficient number, since it is larger than the sum of its proper divisors (26281511).
130005145 is an equidigital number, since it uses as much as digits as its factorization.
130005145 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 46751.
The product of its (nonzero) digits is 300, while the sum is 19.
The square root of 130005145 is about 11401.9798719345. The cubic root of 130005145 is about 506.5863847772.
Adding to 130005145 its reverse (541500031), we get a palindrome (671505176).
It can be divided in two parts, 13000 and 5145, that added together give a triangular number (18145 = T190).
The spelling of 130005145 in words is "one hundred thirty million, five thousand, one hundred forty-five".
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